TIPS ON PRECISION SPINDLE REBUILD ROBRENZ 2020-01-19 | Spindle rebuild of my Trak mill. I cover many details about spindle rebuilding and spindle design.#practitionerofthemechanicalartsI am "robinrenzetti" on Instagram link to Timken Fafnir catalog timken.com/wp-content/uploads/2016/12/5918_Machine-Tool-Catalog.pdfPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
LATHE CHUCK MAGIC TRT#5 ROBRENZ 2022-11-28 | How to get optimum performance of a lathe chuck by properly loading the jaws before boring or grinding the gripping surfaces.#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
MAKING ULTRA PRECISION TOOLROOM SPINDLES #2 ROBRENZ 2021-09-03 | Part 2 showing rotary grinding of the hardened parts. Discussion of many aspects of precision grinding in general. Showing my automated Harig grinder in action doing rotary grinding cycles.#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
MAKING PRECISION GAGE BALLS ROBRENZ 2021-03-07 | I show making high precision gage balls from ultra micrograin carbide with normal machine shop tools. Includes rough grinding, lapping, polishing and measuring to very high levels. Hertzian contact deformations are discussed including calculations. ** 0.000005" = 0.127µm (not nm) **#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
DIY SURFACE PLATE LAPPING PART 2 ROBRENZ 2021-01-05 | Final lapping of the surface plate to just get to the AAA tolerance. I show aluminum foil lapping and grooving and scraping in the lap used for final finishing. Measuring surface finish of Starrett AAA granite plate to determine the surface finish they thought appropriate. Lastly showing the construction of the lap I think will be ideal for future refinement of the plate to even tighter tolerances. 106 micro inch = 2.692 micron#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
MAKING ULTRA PRECISION TOOLROOM SPINDLES #1 ROBRENZ 2020-10-20 | First of a series of videos on making ultra precision toolroom spindles. These are designed to have les than 0.000005" runout and very high stiffness. General design and machining before heat treatment is comvered in this video. (I said 75 divisions in the video, it is 72 divisions for 5 degree increments.)#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
MAKING AN AIR TOOL CHAMFER ATTACHMENT ROBRENZ 2020-07-25 | Design and construction of a chamfering attachment for a Dotco 60000 rpm air tool.#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
AUTOCOLLIMATOR MIRROR SYSTEM ROBRENZ 2020-07-12 | Brief description of how an autocollimator is used to measure straightness and flatness. Followed by my mirror system design and construction details.#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
BRUSH IN CAN MAGIC TRT#4 ROBRENZ 2020-06-12 | My fix for the typical ugly brush in can scenario.#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
THE MAGIC SANDING PLATE TRT#3 ROBRENZ 2020-06-06 | Details about my sanding plate and its uses.#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZThe 12" wide x 25 yard roll of 220 grit Silicon Carbide paper available fromAbrasives South Inc. 1-800-255-8112 #18014 abrasives-south.com/product/roll-12x36-220-grit-product-code-scpe-grain-silicon-coating-closed-coat-backing-paper-weight-e roughly $100.00
CNC PLUS OLD SCHOOL ROBRENZ 2020-05-30 | Using the CNC mill to do an old school metal removal technique.#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
MAKING GROOVING BORING BARS ROBRENZ 2020-05-20 | Making a group of carbide tipped grooving boring bars. CAD design is covered as is a method for repeatable location of the bars in making them and using them. Lots of grinding setups and non typical lapping techniques. The boring bar shanks are ground out of hardened dowel pins.#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
ROBRENZ TOOLROOM TIP #2 ROBRENZ 2020-05-12 | #practitioner_of_the_mechanical_artsA modification to a standard grinding wheel hub to allow precise gripping of superabrasive wheels after indicating in the wheel OD. And a indicator protector to directly indicate on the abrasive surface of the wheel. A how to on dressing super abrasive wheels with Molybdenum rod.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZbrs_workshop • 16 hours ago“Shop Notes”*• Making a grinding arbor nut• Adding spring steel to a dial test indicator for alarger surface• (5C) collet held backstop in the lathe with the chuck on• Tapping head is a SPV (Spintec) SA-0E. I can't find the model on their website. • 3M 467 Adhesive Transfer tape:McMasterCarr (60yd): mcmaster.com/#adhesive-transfer-tape/=19s264mAmazon (.5 in/20yd): amazon.com/dp/B007Y7CQ1S(other sizes): amazon.com/467MP-Performance-Adhesive-Transfer-0-125/dp/B00P26Z04I3M's website: 3m.com/3M/en_US/company-us/all-3m-products/~/3M-Adhesive-Transfer-Tape-467MP?N=5002385+3293242532&rt=rud• Indicating in• Tip about aligning to your spindle for good repeat concentricity.• Opening a dressing a diamond wheel with dollar store sharpening stone and a stick of moly(dinum?)*Not affiliated with any manufacturer or supplier.
MAKING AN INSERT BORING BAR ROBRENZ 2020-04-29 | Making new insert heads for carbide shank boring bars. design and execution details are covered in detail. Method for repeatable quick change of multiple parts is shown. Custom D bit cutter creation for the insert pocket.#practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZ
MAKING A WELDING & WORK TABLE ROBRENZ 2019-07-15 | My weld/work table build showing some of the design and construction. #practitioner_of_the_mechanical_artsPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZShop Notes"*• Explanation of the design• Overview in CAD• Details of clamping foot mount• Use of a drill and tap fixture with bushings to tap the table• 3M 467 Adhesive Transfer tape:McMasterCarr (60yd): mcmaster.com/#adhesive-transfer-tape/=19s264mAmazon (.5 in/20yd): amazon.com/dp/B007Y7CQ1S(other sizes): amazon.com/467MP-Performance-Adhesive-Transfer-0-125/dp/B00P26Z04I3M's website: 3m.com/3M/en_US/company-us/all-3m-products/~/3M-Adhesive-Transfer-Tape-467MP?N=5002385+3293242532&rt=rud• Making custom fittings to share torch tanks• Rob's "Micro-Torch" appears to be a Smith's Little Torch:Smith's Site (Info): http://www.smithequipment.comAmazon: amazon.com/stores/node/3041305011Otto-Frei: ottofrei.com/Smith-Little-Torch-Kit-with-Hose-5-Tip-Sets-3-4-5-6-7McMaster (appears to be the same): mcmaster.com/7932a12[Note: There appear to be import knock-offs of these torches, be careful not to get scammed]• Using a collet as a 'round wrench'• Diamond disc on hand grinder to cut top of tool boc• Several fab tricks in attaching the drawers to the cart• 3M 9482PC Transfer adhesive for plasticsMcMaster .5": mcmaster.com/7628A68Amazon: amazon.com/3M-9482PC-Performance-Adhesive-Transfer/dp/B013L2A2Y2• Powder Coat Tape 1.5"McMaster# 7630A26 mcmaster.com/7630a26
MAKING LINEAR NEEDLE BRG. CAGES ROBRENZ 2019-01-21 | Design and construction details of needle bearing cages to convert my Mitsui surface grinder vertical travel from plain ways to preloaded linear needle bearings.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!"Shop Notes"* by brs_workshop• Overview of the vertical ways on the Mitsui and the change to needle roller bearings• Acquiring needles from standard radial bearings• Design of modifications• Rails from planer blades:Grizzly Tools: grizzly.com/search?q=(planer+AND+blade)+OR+(planer+OR+blade)#• Kinematics of rollers and cages• Fixture design and setup for the cage grinding.• Silicon Carbide wheel for grinding 'crispy plastics', 50D gasket material for vacuum hold-down• Buddy Rich drum solo?• Sanding block with diamond film• Fly-cutting abs as sacrificial backer• O'-flute cutter: http://www.harveytool.com/prod/End-Mills-for-Plastics/Material-Specific-End-Mills/Browse-Our-Products_253/End-Mills-for-Plastics---Square-Upcut---Single-Flute_113.aspx• Deburring with Diamond sanding blocksWhat I believe is the correct product:McMasterCarr: mcmaster.com/sanding-sponges• Robin sympathizing with every dentist (aka deburring)*Not affiliated with any manufacturer or supplier.
Moore Pattern Hand Scraping ROBRENZ 2018-10-01 | My take on the mechanics of the Moore (crescent moon) hand scraping stroke. Also cover scraper sharpening tips and marking medium application. Thanks to Wayne Moore for "Foundations of Mechanical Accuracy" which inspired me roughly 40 years ago to start scraping and pursuing accuracy.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!"Shop Notes"* by brs_workshop• Robin's background and experience with scraping• Showing the basics of the crescent pattern, hand positions and motions• Scraping with a smaller scraper in a full pattern on a test piece• Explaining how to sharpen and lap the scraper blade, advice on radii• Showing the sharpening wheel. These right-angle slow-speed face grinders used to be widely available from every woodworking supplier. Even Harbor Freight sold a version (sometimes called Wet/Dry grinders). However, these now seem unavailable in the U.S. If someone knows why, please share.• Showing different scrapers and their modifications and characteristicsAnderson Scraper: andersonscraper.com/product-category/anderson-original-solid-shank-hand-scrapersIt looks like McMaster has Anderson too: mcmaster.com/#scrapers/=c11d354c5f154b87aaf5ad5f0aa91a2djmq5i52oBiax has a hand scraper: dapra.com/biax/scrapers/accessories.htm• Rob's home-made dobber (high spot spreader)Dykem High-Spot Blue (McMaster): mcmaster.com/6165k11(KBC Tool): kbctools.com/products/FLUIDS/LAYOUT%20SUPPLIES/INSPECTION%20FLUIDS/4060.aspxNot sure what the red is, so no links.[Robin hereRed is dykem red spotting ink mixed with crayola orange powder pigment and light machine oil (velocite 10). baked at a low temp to firm up to a hard shoe polish consistency.]• Using precision ground flatstones in combination with scraping"*Not affiliated with any manufacturer or distributor. Links for convenience.
MAKING LINEAR BALL WAY CAGES ROBRENZ 2018-08-14 | Design and build of linear ball way cages for my Mitsui surface grinder rebuild. Including special clamps and rail system for long thin parts and a precision die for cutting reticulated foamPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!"SHOP NOTES" contributed by brs_workshop• Overview of the old ball cages, condition and design considerations• Switching from grease to oil lubrication• SolidWorks(?) explanation of design.• @7m ""Just enough of a drawing""• Delrin to wood transfer adhesive test. A study quick-and-dirty workholding of awkward pieces, fully explained and tested with a force gage.• 3M 467 Adhesive Transfer tape:McMasterCarr (60yd): mcmaster.com/#adhesive-transfer-tape/=19s264mAmazon (.5 in/20yd): amazon.com/dp/B007Y7CQ1S(other sizes): amazon.com/467MP-Performance-Adhesive-Transfer-0-125/dp/B00P26Z04I3M's website: 3m.com/3M/en_US/company-us/all-3m-products/~/3M-Adhesive-Transfer-Tape-467MP?N=5002385+3293242532&rt=rud• 3M F9460PC Adhesive Transfer tape: (not to be confused with others that contain the same number)McMaster (.5 in/60yd): mcmaster.com/#7628a52/=1e6ps96Amazon (.5 in/5yd): amazon.com/3M-Tape-F9460PC-width-length/dp/B007Y7DA683M's website: 3m.com/3M/en_US/company-us/all-3m-products/~/3M-VHB-Adhesive-Transfer-Tape-F9460PC/?N=5002385+3293242476&rt=rud• 3M Plastic Adhesive Transfer tape:Not sure which one is shown, probably 9482PC (2mil) or 9485PC (5mil)McMaster (PPE bonding): mcmaster.com/#adhesive-transfer-tape/=1e6pv593M's Website (9482PC): 3m.com/3M/en_US/company-us/all-3m-products/~/3M-Adhesive-Transfer-Tape-9482PC/?N=5002385+3293241523&rt=rud• Wagner FDX Force Gages: http://www.wagnerinstruments.com/products/force-gages/digital-force-gages/force-ten-fdx• NOGA Ceramic Blade Plastic Deburring Tool, CR 1500 or 2000:McMaster: (CR2000, maybe): mcmaster.com/#6074a36/=1e6vzt7Amazon (CR2000): amazon.com/NOGA-Ceramic-Deburring-Tool-Set/dp/B002718Y26KBC (CR2000): kbctools.com/products/ABRASIVES/DEBURRING%20TOOLS/HAND%20DEBURRING%20TOOLS/10954.aspxNoga: http://www.noga.com/Products/cera/Ceramic%20tools/CR1500/Mini_Ceramic_Handle_and_Convexed_Blade_-_CR1500• Notice the 'fence' or alignment pins in this fixture are deburring tools.• Explaining ball deflection, Hertzian stresses in a ball way.• Making improved clamps from ViseGrips.ViseGrip 9LN 9 in. ""Long Nose"" (Made in China):Amazon: amazon.com/Irwin-15-9LN-8-Inch-Capacity-9-Inch/dp/B00004SBB2Harbor Freight (also Made in China):harborfreight.com/hand-tools/pliers/9-in-long-nose-locking-pliers-63871.html• Tip about evenly wearing your abrasives by watching the spark pattern.• Nylon Deburring Brush Wheel:McMaster: mcmaster.com/#4901a56/=1e6wp6mA number of other brands available from retailers.• 3M Strip Caulk 08578:Amazon (20yd): amazon.com/3M-08578-Black-Strip-Calk/dp/B000PEZ1L43M's site: 3m.com/3M/en_US/company-us/all-3m-products/~/3M-Strip-Calk/?N=5002385+3293194020&rt=rud• Apprentice = broach catcher• Haircell finish plastics• Ever wonder what that application pressure is? Well, from 3M's datasheet on 467MP it's 10-15 psi.• Tapping head is a SPV (Spintec) SA-0E. I can't find the model on their website. • #0000 Stainless Steel Wool for Deburring hard plastics• Creating a foam die cutter• 100 pore-per-inch reticulated (open cell) foam.• Techniques for facing accurate rings of triangular cross-section. Cubic Boron Nitrite turning tool reground.*Not affiliated with any distributor or manufacturer. Links for reference & convenience only.
ROBRENZ TOOLROOM TIP #1 ROBRENZ 2018-07-25 | Some toolroom tips on spin grinding with a screw mount of the part. Special trick to keep part from moving when final tightening part.Lots of subtle details covered.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
NIKON COMPARATOR RESTORE ROBRENZ 2018-07-18 | A few of the more interesting aspects of a quick rebuild of this Nikon optical comparator. I could not cover all the aspects I usually do because I needed to get it done quickly and just didn't have time to video all I did. Hope you find it interesting anyway.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
ULTRA PRECISION REPEAT O METER ROBRENZ 2018-04-11 | I needed a quick and dirty repeatometer for my surface plate lapping project. Then I realized it fit the requirements of the Spareroom toolmaking competition 2018 by Emma. So with a 20 minute limit I tried to capture all the fun.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Emmas competition entry playlist youtube.com/watch?v=NWdJ8r_0m8A&list=PLUNkS7pOL3zsDqvjFtzKu5qhTYFnOe_p9
DIY SURFACE PLATE LAPPING ANSWERS TO PART 1 QUESTIONS ROBRENZ 2018-03-19 | Answers to questions posed in the comments of DIY SURFACE PLATE LAPPING PART 1Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
DIY SURFACE PLATE LAPPING PART 1 (audio fixed) ROBRENZ 2018-03-05 | Part 1 of a series of lapping my 3' x 4' master pink surface plate.You will be following along as I learn as I go on this project. This covers using a precision level to determine flatness and lapping techniques. This version has the audio at normal speed.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
DIY SURFACE PLATE LAPPING PART 1 ROBRENZ 2018-03-05 | Part 1 of a series of lapping my 3' x 4' master pink surface plate.You will be following along as I learn as I go on this project. This covers using a precision level to determine flatness and lapping techniques.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
RING TYPE PART TECHNIQUE ROBRENZ 2018-02-19 | This is a method I use to make multiples of ring shape plastic parts. The use of a programmable digital readout with multiple tool offsets makes this a easy operation.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
DECKEL CLONE MODIFICATIONS 1 ROBRENZ 2018-02-04 | Discussion of my choice of Deckel Clone and first of a series of improvements.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Shars wheel adaptor is 505-1008 must call in to get these it won't show up on web.Stefan Gotteswinter youtube.com/user/syyl/featuredTool & die guy youtube.com/channel/UClNjG4-zYTveXJYl4f-ZMqA Tom Lipton Oxtool youtube.com/channel/UCZC9LGZLfyjrKT4OZne-JNw
ROBRENZ ATD #1 INTRO, 3 PLATE METHOD ROBRENZ 2018-01-24 | First episode of my "Attention to detail" seriesPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great synopsis of the video by brs_workshop• Explanation of show name (Attention to Detail)• Robin's Instagram: instagram.com/robinrenzetti (Photos and short video clips of work)• Precision ground flat stones and 3-plate method limitations, repeatometer & two-footed twist gagesOriginal video: youtube.com/watch?v=DVLXsq7pi9Y• YouTube Shout-outs: Stan Zinkowksy/Shadon HKW/BarZ:youtube.com/channel/UCircIu8sQ-e67gH4kcb0xdASteve Summers:youtube.com/channel/UCjrGHSAkAN0ac8aVejwPBvASteve Barton/Solid Rock Machine Shop:youtube.com/channel/UCKPqKYF73sJbFUSzo5dQxtQPeter/Edge Precision:youtube.com/channel/UCCkSr3M8GXbS4txqPY7OMxQJoe Piecynzki/Advanced Innovations:youtube.com/channel/UCpp6lgdc_XO_FZYJppaFa5w• Heidenhain DROs and linear scales for Mitsui grinder• Precision tool room spindles (videos to come)• Tips:Lathe chuck backing plates w/flats to move to vise workholding in another machineAiry (.21132*L) points vs. Bessel (.2203*L) vs. Minimum Sag against Gravity (.2232*L) points (en.wikipedia.org/wiki/Airy_points)Simple center height setter• Q&A about surface place stand and designDifferential levelsKinematic mounts, theory vs. reality with materials and stressesWhipple-trees: en.wikipedia.org/wiki/Whippletree_(mechanism)
MAKING A SURFACE PLATE STAND ROBRENZ 2018-01-07 | A quick channel update on whats coming up and making a movable surface plate stand from two Harbor freight tool boxes. Design includes jacking feet for leveling the plate and getting the weight off the casters when stationary. Includes a general overview of the construction process.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
TORMACH SLANT PRO 34 SECOND PULLEY CHANGE ROBRENZ 2017-10-02 | My modification to the Tormach slant pro lathe drive system to allow rapid pulley change for the two speed ranges. This link youtube.com/watch?v=LMJEda7FqAw Is the Tormach video on how to change the pulleys for comparison.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
PRECISION GROUND TOOLROOM STONES ROBRENZ 2017-06-11 | I describe/show where and how to use precision ground flat stones. Why these are an absolute must for working with high precision tooling. What makes them work and how to make your own your own set.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Two of the papers I mentionedstatic1.squarespace.com/static/5b904ddc620b85136aab54a4/t/5c92e62215fcc0f041193638/1553131042995/flatstones.pdfhttp://www.sciencedirect.com/science/article/pii/S0141635997000123
Custom guarding on the Hardinge HLVH ROBRENZ 2017-02-27 | I cover the use of neoprene diaphragm sheet material to make way covers on the Hardinge HLVH lathe and other machines. Also cover aspects to consider on mounting digital readout scales.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
THE SOLID TOOL POST MOUNT ROBRENZ 2017-02-19 | I discuss the merits of making a solid block to replace the compound slide of the lathe.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
CENTERLESS GRINDING ON THE SURFACE GRINDER ROBRENZ 2017-02-03 | A quick and dirty setup to centerless grind some pins on the surface grinder.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
ADJUSTABLE CHUCK STOPS ROBRENZ 2017-01-16 | Discussion of design aspects of two chuck stop systems I use. Chucking deformation of thin disks is also demonstrated.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
MAKING INSERT CARTRIDGES PT2 ROBRENZ 2016-09-14 | Part two of a two part series on making 3 each of 2 different indexable insert cartridges. Lots of surface grinder setups and procedure discussion. A focus on how removing material by grinding can be faster than milling because of magnetic work holding methods. Some details about heat treatment and hardness levels vs toughness.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
MAKING INSERT CARTRIDGES PT1 ROBRENZ 2016-08-31 | Part one of a two part series on making 3 each of 2 different indexable insert cartridges. Lots of surface grinder setups and procedure discussion. A focus on how removing material by grinding can be faster than milling because of magnetic work holding methods.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great video synopsis by brs_workshop"Shop Notes"*• Talks about shop visit from Tom Lipton• Quick overview of the videos and reveals the motive of the video: surface grinder as a metal removal machine• Reviews the drawing. If Robin's dirty hands bother you, the smudges on the drawing will really get you going ;)• Explains thought process of machining and grinding a complex shape.• Stoning the Rollin saw to prevent damage from hardened A2• Starrett blade referenced is an Intenss PRO 3/4" x .035" x4-6/pAmazon (Intenss PRO): amazon.com/Starrett-Intenss-Bimetal-Positive-Length/dp/B004R9Q09AKBC Tool (only have 5-8 and up): kbctools.com/products/CUTTING%20TOOLS/SAW%20BLADES/BAND%20SAW%20BLADES/4019.aspxStarrett website: http://www.starrett.com/saws/saws-hand-tool-products/band-saw-blades/bi-metal/intenss-pro#ProductsI am suspicious McMasterCarr also carries these and simply isn't branding them: mcmaster.com/#band-saw-blades/=19vlvj1They also make the Intess PRO-DIE which is basically the same but with smaller blade depths for tighter radii and small machines.Amazon (Intenss PRO-DIE): amazon.com/Starrett-Intenss-Pro-Die-Bimetal-Positive/dp/B004MYFPFKKBC Tool (Intenss PRO-DIE): kbctools.com/products/CUTTING%20TOOLS/SAW%20BLADES/BAND%20SAW%20BLADES/3997.aspxStarrett website: http://www.starrett.com/saws/saws-hand-tool-products/band-saw-blades/bi-metal/intenss-pro-die• Setting up the grinds• Tip on checking a grinding wheel's corner radius with a razor blade• Methods of removing items from the chuck without sliding• Using a squeegee to clean the magnetic chuck.• Using the back and end of caliper jaws as a depth gauge• Setup angle blocks. These are from Brown and Sharp but imports are also made. There are two widths but B&S only seems to make the thinner ones.Amazon (B&S):amazon.com/Brown-Sharpe-599-921-17-Piece-Precision/dp/B0006J3C00KBC Tool (B&S): kbctools.com/products/MEASURING%20@@26%20INSPECTION/BLOCKS/ANGLE%20BLOCKS/6034.aspxAmazon (import normal): amazon.com/HFS-Piece-Precision-Angle-Block/dp/B00QSS8RWG(import wide): amazon.com/HFS-UNIVERSAL-BLOCKS-V-BLOCK-HARDENED/dp/B00QSS8U9GKBC Tool (import normal): kbctools.com/products/MEASURING%20@@26%20INSPECTION/BLOCKS/ANGLE%20BLOCKS/1307.aspx(import wide): kbctools.com/products/MEASURING%20@@26%20INSPECTION/BLOCKS/ANGLE%20BLOCKS/6035.aspx• Setting up 45 deg. grinds in a vise with combo square head and angle block set• Bausch and Lomb Hastings Triplet from Amazon:(10x): amazon.com/Sight-Savers-Hastings-Triplet-Magnifier/dp/B00A0EIZZS(7x): amazon.com/Bausch-Lomb-Hastings-Triplet-Magnifier/dp/B00WVH6PLI(14x): amazon.com/Bausch-Lomb-Hastings-Triplet-Magnifier/dp/B0007LRNG6(20x): amazon.com/Bausch-Lomb-Hastings-Triplet-Magnifier/dp/B000OVHUPS• Starrett Angle Gauges:McMasterCarr: mcmaster.com/#starrett-angle-gauges/=19vmnz1Amazon: amazon.com/Starrett-466-Angle-Degree-Leaves/dp/B0006J4I62• Dividing the blocks into separate holders with the bandsaw• A quick peak at using the precision ground flat stones on the grinder• Knipex parallel jaw pliers-wrench. There is a range of sizes and grip styles.Amazon (7" reg. grip): amazon.com/Knipex-8603180-7-Inch-Pliers-Wrench/dp/B000X4KP1C• Grinding setup with a magnetic v-chuck at and angle in a grinding vise upon the regular magnetic chuck• We get to see the grinder's adjustable splashguard.• Two crash modes*Not affiliated with any manufacturer or distributor. Links for reference.
TIPS ON MANUAL LATHE HIGH PRODUCTION ROBRENZ 2016-08-11 | Tips on running 400 small pins on a manual lathe. Reverse bar feed technique used for parting off pieces with a "part & chamfer tool". Second side finished with a "turn & drill point" tool. Use of a programmable DRO are detailed.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
MAKING AND USING LARGE DIAMETER LAPS ROBRENZ 2016-07-30 | Design of a easy to make large diameter ID lap system. Showing all the machining steps of making two new sizes of lap rings. And lapping two D2 tool steel parts at 60 RC hardness using these laps and diamond slurry.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great synopsis of the video by brs_workshop"Shop Notes"*• Explanation of project and overview of the lap design• Facing and turning the lap• Creating the reliefs with the DRO bolt pattern function• Cutting the flexure slits with the bandsaw• De-burring with a pencil type air grinder (looks like a Dotco model).• Blue Moly links:McMasterCarr: mcmaster.com/#bostik-never-seez-blue-moly-antiseize-lubricants/=19pflvgAmazon: amazon.com/Never-Seez-NBBT-8-Anti-Seize-Compound-Temperature/dp/B001HWBSTM• Turning and cutting the grooves• TapMagic Aluminum: McMasterCarr: mcmaster.com/#tap-magic-cutting-fluids/=19v2sp7KBC Tool: kbctools.com/products/FLUIDS/CUTTING%20FLUIDS/TAPPING%20FLUIDS/3073.aspx• Lapping the parts with 15µ diamond• Aerosol lube is Stoner brand lube with PTFE (not surprising, it cannot be sold in California).Stoner's website: http://www.criticalcleaning.com/products/product?Category=lubricants&Item=A194• 3M 467 Adhesive Transfer tape:McMasterCarr (60yd): mcmaster.com/#adhesive-transfer-tape/=19s264mAmazon (.5 in/20yd): amazon.com/dp/B007Y7CQ1S(other sizes): amazon.com/467MP-Performance-Adhesive-Transfer-0-125/dp/B00P26Z04I3M's website: 3m.com/3M/en_US/company-us/all-3m-products/~/3M-Adhesive-Transfer-Tape-467MP?N=5002385+3293242532&rt=rud• Using inside mics as a measurement transfer tool with outside mics• Crack in D2 stock*Not affiliated with any manufacturer or distributor. Links for convenience.
SWIVEL TOOLHOLDER MOD ROBRENZ 2016-07-21 | Modifying a standard 35 degree profiling insert toolholder to have a swivel with 22.5 degree increments of position. Method of making a indexing face coupling using balls. Radius grinding on the surface grinder. Grinding conical relief on carbide inserts to allow small diameter facial plunge cuts.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great video synopsis by brs_workshop"Shop Notes"*• Overview of project and discrete design elements• Shars toolholder used (3/4" SVJBR12-3B for VBMT 33x inserts):http://www.shars.com/3-4-rh-svjb-small-screw-lock-positive-insert-tool-holderThis particular holder isn't common but would need to be specially selected for the application anyway.• Grinding the tool holder to 5/8" (aka SVBJR10-3B but those are even harder to find)• Tease of wheel dresser @ 3m20s: youtu.be/ltVndPaSauE?t=3m20s• Here's Deschner's Kinechek page (TL;DR: It's an extremely accurate, tuneable, constant velocity damper):http://deschner.com/products/kinechek• Glimpse of electronic depth gage base on Mitutoyo digital caliper• Hacksawing the tool body. It seems that Starrett stopped making Red-Stripe (solid HSS) hand-hack blades. They still make them for power hacksaws but those are thicker and deeper. Bahco still makes a HSS all-hard blade but good luck finding them in the US.• Tempering the tool holder.• Milling and drilling the ball detent pattern with the bolt pattern function• Grinding a radius handheld. Reminiscent of Tom Lipton's handheld radius milling: youtu.be/AZkP1uiMzJk?t=2m38s• Assembling the joint• Using Loctite 648 to retain the balls in the detents:McMasterCarr: mcmaster.com/#loctite-648/=19u3nhbAmazon: amazon.com/Loctite-442-21443-Retaining-Compound-Strength/dp/B000O01EU6KBC Tool: kbctools.com/products/FLUIDS/THREADLOCKERS%20@@26%20SEALANTS/RETAINING%20COMPOUND/10026.aspxLoctite page (648): http://www.na.henkel-adhesives.com/industrial/product-search-1554.htm?nodeid=8797714219009Loctite page (retaining range): http://na.henkel-adhesives.com/industrial/retaining-compound-14963.htm• Blue Moly links:McMasterCarr: mcmaster.com/#bostik-never-seez-blue-moly-antiseize-lubricants/=19pflvgAmazon: amazon.com/Never-Seez-NBBT-8-Anti-Seize-Compound-Temperature/dp/B001HWBSTM• Relieving the tool holder using a rotary table setup at an angle in a grinding vise.• The tool in use creating grind reliefs.*Not affiliated with any manufacturer or distributor. Links for reference.
CUSTOM CALIPERS PART 3 ROBRENZ 2016-07-10 | In this final segment of the series: Silver soldering the jaw pieces to the caliper frames, finish machining of the face groove jaws, slitting of the face groove jaws with a .018" cutoff wheel. Finish grind of all the surfaces and final assemblyPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great video synopsis by brs_workshop"Shop Notes"*• Overview of steps in this video• Setup, slitting and grinding the jaws• Silver-soldering the jaws• Harris Stay-Silv Black Hi-Temp Brazing FluxAmazon: amazon.com/Harris-SSBF1-Stay-Brazing-Black/dp/B00EDMM4KUHarris' website: http://www.harrisproductsgroup.com/en/Products/Alloys/Brazing/Fluxes/Stay-Silv-Black-Flux.aspx• Using Stay-Brite to silver-solderHarris Stay-Brite Kit (Amazon): amazon.com/Harris-SBSKPOP-Stay-Brite-Silver-Bearing/dp/B0089ETUN2Harris' website: http://www.harrisproductsgroup.com/en/Products/Alloys/Soldering/Lead-Free-Solders/stay-brite.aspx• Whippletree reference @ 3m20s:youtu.be/s3Ufn5K6JVE?t=3m20sLink to Wikipedia if you're unfamiliar with the term: en.wikipedia.org/wiki/Whippletree_(mechanism)• Shimming a floating part with brass wedges (non-ferromagnetic)• Setup of a non-critical angle on the grinder.• We get our first peak of Rob's combinatoric setup blocks.• It's in the background ~9m20s but it reminds me: if you have oily or flammable laden rags you should get a fireproof can.• 3M 467 Adhesive Transfer tape:McMasterCarr (60yd): mcmaster.com/#adhesive-transfer-tape/=19s264mAmazon (.5 in/20yd): amazon.com/dp/B007Y7CQ1S(other sizes): amazon.com/467MP-Performance-Adhesive-Transfer-0-125/dp/B00P26Z04I3M's website: 3m.com/3M/en_US/company-us/all-3m-products/~/3M-Adhesive-Transfer-Tape-467MP?N=5002385+3293242532&rt=rud• A peak at Brown and Sharpe angle blocks• A creative slitting wheel dressing setup with diamond coated core drills• Assembling the jaws• Blue Moly links:McMasterCarr: mcmaster.com/#bostik-never-seez-blue-moly-antiseize-lubricants/=19pflvgAmazon: amazon.com/Never-Seez-NBBT-8-Anti-Seize-Compound-Temperature/dp/B001HWBSTM• Wiha ESD safe System 4/Micro-bit screwdriver:Amazon listings: amazon.com/gp/search/keywords=wiha+ESD+Safe+micro+bitWiha's website: wihatools.com/tech-tools/micro-bits• Important note about 'clocking' screw threads• Re-applying a label with 3M 467Tip: I like to trim around labels with a curved scalpel blade 'riding' the edge of the label.*Note affiliated with any manufacturer or distributor. Links just for convenience.
CUSTOM CALIPERS PART 2 ROBRENZ 2016-07-09 | Here I blend the edges of all the carbide gage pins and lap a 0.4" spherical radius on the 1/16" diameter pins. Machining of all the jaw pieces that will get silver soldered to the calipers. Making grinding wheel flanges using a interesting chuck stop system. And mounting a .020" thick grinding wheel.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great video synopsis by brs_workshop"Shop Notes"*• Overview of steps in this video.• Radiusing the pins• Lapping the spherical ends in the lathe with a die grinder adapted to quick-change toolpost. Hollow cylindrical lap at an angle.• Flex-shaft rotary grinder 22K RPM*:Not a Dremel, not a Foredom, not a DuMore(money),It's an inexpensive import from a company you've never heard of: SE.American Science & Surplus (all around cool company, different handpiece): sciplus.com/p/VARIABLE-SPEED-FLEX-SHAFT-GRINDER_43486Amazon (different handpiece): amazon.com/SE-979FSG-Flexible-Grinder-Switch/dp/B000NW4YRKAmazon (just the handpiece):amazon.com/Handpiece-No-28-Tapered-32in-Collets/dp/B000WTM200/ref=sr_1_13?ie=UTF8&qid=1507724502&sr=8-13&keywords=foredom+handpiece*Note that the similar looking tool sold by Harbor Freight only goes to 15K, which is ~68% of the SE.• Review of the drawings for the jaws• Machining the jaws.• Rob shows his sets of thin parallels including a set of wavy ones.• Loctite 380 (BlackMax):KBC Tool: http://www.kbctools.com/products/FLUIDS/ADHESIVES/ADHESIVES%20@@26%20EPOXY/4098.aspxMcMasterCarr: mcmaster.com/#loctite-380/=19rh7aqAmazon (tube 0.1 oz): amazon.com/Adhesive-Instant-Black-Loctite-Corporation/dp/B000132VKI(bottle 1.0 oz): amazon.com/Loctite-135423-Toughened-Instant-Adhesive/dp/B000132VEELoctite website: http://na.henkel-adhesives.com/product-search-1554.htm?nodeid=8797890609153&msdsLanguage=EN_US&selectedTab=technical• Drilling and tapping the jaws.• Cool-Tool 2 + Tetrahedral Boron NitrideUnfortunately, Cool Tool 2 can't be sold in California. McMasterCarr: mcmaster.com/#cool-tool-ii-cutting-fluids/=19perdz Source of tetrahedral Boron Nitride powder. amazon.com/Boron-Nitride-BN-Powder-Purity/dp/B015ENSWHA/ref=sr_1_2?ie=UTF8&qid=1507723551&sr=8-2&keywords=zyp+boron+nitride • Grinding down a woodruff cutter to make a slitting saw. Using a cut-off disc to slot the flexure in the jaws.• Making support flanges for a cut-off wheel mounted in a surface grinder.• We get a peak at the chuck backstop system that has since become very popular.• Good tip about creating a dish when edge-holding in the chuck.• Norton Cut-off wheels:MSC might have the right one: mscdirect.com/product/details/01833508Obviously you need to size appropriately for your machine.*Not affiliated with any manufacturer or distributor.
CUSTOM CALIPERS PART 1 ROBRENZ 2016-07-09 | Part 1 of a 3 part series on making 2 different custom calipers from Mitutoyo absolute calipers. Design, disassembly, modifying the caliper frames,making small OD laps, lapping carbide pins, and cutting carbide pins to length will be covered in this videoPaypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great synopsis of the video by brs_workshop"Shop Notes"*• Overview of topics covered in each video.• Just a note on the 'make one for you, one for me': This is quite common in small production industries. More often than not the customer's expense is mostly in time and skill of the maker. Most of the maker's time is in setup and process design. Swapping out an extra set of parts is trivial compared to revisiting. This also adds some insurance if there's a surprise re-order or if world chooses to make your life difficult that week (lost packages, theft, disasters).• Review of the customer sketch. Note that the customer knows technical drawing conventions (sectioning) which can make even a very simple drawing sufficient to build from.• Looking at a CAD drawing of the modifications and fabricated parts• Shows how to disassemble a digital caliper neatly• Calipers used: Mitutoyo 500-196-30 (Be aware that there are counterfeits sold online, buy from a reputable source)McMasterCarr: mcmaster.com/#8647a42/=19px6njKBC Tool: http://www.kbctools.com/products/MEASURING%20@@26%20INSPECTION/CALIPERS/ELECTRONIC%20DIGITAL%20CALIPERS/5759.aspx• Trimming the calipers with a cutoff disc on the surface grinder.• Creating the grooves for the head assembly• Making simple O.D. laps with parallel clamp adjuster• Lapping a carbide drill blank to size and finish• Paper lap trick• Trimming pins and a well thought-out 'quick-and-dirty' fixture*Not affiliated with any manufacturer or distributor. Links just for convenience.
Restoring Tom Liptons Level Frame ROBRENZ 2016-05-29 | Restoring a old precision level frame by surface grinding and scraping/flaking of the base that had deep rust and pitting. Some electronic indicator fun at 0.000001" per division while inspecting the bottom for flatness. filling the engraving with epoxy filled with carbon black.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
VERSA-OHM MACHINING THE CASES ROBRENZ 2016-04-27 | Custom machining of a standard case for the Versa-Ohm decade resistance box. Unique design, fixtures and procedures are covered. Drilling of holes thru the graphic overlay is shown.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
VERSA-OHM GRAPHIC OVERLAY APPLICATION ROBRENZ 2016-04-27 | Precision graphic cutting and placement on 5 sides of an enclosure with radiused edges. Includes design of templates, cutters, fixture, and shows application technique.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great video synopsis by brs_workshop "Shop Notes"*• Link to Papilo website: http://www.texascraft.com/hpsNot sure which exact film is being used here, might be this one: http://www.texascraft.com/hps/Waterproof-Glossy-White-FilmAmazon link to a limited selection of the Papilo product range:amazon.com/Papilio/b/?ie=UTF8&node=3037955011&field-lbr_brands_browse-bin=Papilio• Explanation of radius bending and neutral axis.• Explanation of both cutting templates.• Description of radius die (punch).• Alignment jig and applying the label without bubbles*Not affiliated with any manufacturer or distributor. Links just for reference.
MAKING THE VERSA -OHM HEAT SINKS ROBRENZ 2016-04-27 | Highlights of the design,construction and assembly of the heat sinks used on the smd resistors in the Versa-Ohm decade resistance box. Shearing and bending of the anodized aluminum sheet along with thermal adhesive application is shown.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great video synopsis by brs_workshop"Shop Notes"*• One of the best YouTube machinist quotes of all time: "Like a lot of things that come from China, they're good if you consider them a kit".• Grizzly link to shear: http://www.grizzly.com/products/12-Heavy-Duty-Bench-Shear/T27140?utm_campaign=zPage&utm_source=grizzly.com• Overview of the modifications to the tool.• Good advise about making parallel cuts• Using machine vises as small part sheet metal forming tools• Making hard silver solder paste in the shop with a burr.• Using Stay-Brite to silver-solderHarris Stay-Brite Kit (Amazon): amazon.com/Harris-SBSKPOP-Stay-Brite-Silver-Bearing/dp/B0089ETUN2Harris' website: http://www.harrisproductsgroup.com/en/Products/Alloys/Soldering/Lead-Free-Solders/stay-brite.aspx• Harris Stay-Silv Black Hi-Temp Brazing FluxAmazon: amazon.com/Harris-SSBF1-Stay-Brazing-Black/dp/B00EDMM4KUHarris' website: http://www.harrisproductsgroup.com/en/Products/Alloys/Brazing/Fluxes/Stay-Silv-Black-Flux.aspx• Another forming tool, this one with a urethane backer• Overview of heat sink assembly w/fishing line insulator, explanation of best contact location for heatsink.• Assembly of heatsink and resistor bank.*Not affiliated with any manufacturer or distributor. Links for convenience.
Taper Boring on the Mill ROBRENZ 2016-04-24 | Using Tree taper boring head on the milling machine to bore tapered holes for a rack to hold my Cat 40 tool holders.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great synopsis of the video by brs_workshop"Shop Notes"*• Shot of mill and toolholders in drawers• Designing racks from leftover materials around the shop• Using a 'universal' protractor bevel to measure the taper• Calculating the angle from the protractor reading. Calculator used is a HP48GX. These are out of production but enjoy a following. The program shown is not standard on a Ti-8x series. The 48GX is quite expensive used. The 48G is easy to find and usually inexpensive by comparison (check ebay).Amazon link: (48GX used) amazon.com/HP-HP48GX-Expandable-Graphic-Calculator/dp/B00004TFKZ• Rob proceeds to do the closest thing to carpentry we're likely see on this channel.• Mechanical pencil is probably an Uni Kurutoga. Amazon: amazon.com/gp/search/ref=sr_pg_1?sf=col&fst=p90x%3A1&rh=i%3Aaps%2Ck%3Auni+kurutoga&keywords=uni+kurutoga&ie=UTF8• Step drilling the holes.• Overview of the Tree boring head.• Looking at the custom carbide cutter.• Modification of cutter to improve performance• Chamfer Meister in use• Using a low-angle chamfer in the mill. AKA Using a 5-digit mill with a $$$ insert cutter to approximate a $150 wood router with a $30 bit ;)*Not affiliated with any manufacturer or distributor. Links just for convenience.
Differential Screw Vise Jaws ROBRENZ 2016-04-18 | Here I show using differential screws or insert clamp screws to hold vise jaws in place. Also show backwards part off techniques for making the left hand threaded inserts and making the aluminum soft jaws.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!Great video synopsis by brs_workshop"Shop Notes"*• Inspired to use soft jaws by Tom Lipton's Baby Bullet vise build: youtube.com/playlist?list=PLeIuq8LxgnrHZyoRtyvqw-G0Ggl9Ndp70• Explains differential screw terminology• Explains how this design is adapted to a typical vise jaw• Uses 10-32 clamping/differential set screw.McMasterCarr: mcmaster.com/#set-screws/=19pej3n• Parting with a collet-stop in the Hardinge. Collet-stop made to accomodate pip left from parting. Holding the part by hand to prevent whipping (not recommended).• Drilling and tapping the LH thread in the insert• Cool-Tool 2 + Tetrahedral Boron NitrideUnfortunately, Cool Tool 2 can't be sold in California. Also, I didn't find an immediate source of tetrahedral Boron Nitride.McMasterCarr: mcmaster.com/#cool-tool-ii-cutting-fluids/=19perdz• Overview of collet indexing head and modifications made to it.• Fitting the screw slot• Quick introduction to the Rollin EF-1459 and modifications.Instagram post of further depthstop mod: instagram.com/p/BVDJ-0aAohJ/?taken-by=robinrenzettiRollin's website: http://www.rollinsaw.com/band_saws/EF1459_vertical_band_saw.htmI've used one of these. They are the only real competitor to Marvel saws. While I thought it was a good tool, I had some complaints. Most of which are addressed by Rob's mods.• Cutting and flattening the Al stock• Gang milling an odd setup.• There's a call-out of the 11R Vise-Grips but I cannot make out the change.This Instgram post seems to explain it: instagram.com/p/BYzGmVmg3np/?taken-by=robinrenzetti• Note on getting a better finish from insert teeth on the inside on a face mill if the work is smaller than the cutting diameter.• Overview of the Chamfer-Meister, aka the most over-built attachment a Craftsman belt sander has ever seen.• Drilling and tapping the Al soft jaws.• Tip about LPS-3 corrosion inhibitorAmazon: amazon.com/LPS-Premier-Rust-Inhibitor-Aerosol/dp/B01N3RZI0JKBC Tool: http://www.kbctools.com/products/FLUIDS/LUBRICATION%20PRODUCTS/GREASE/10384.aspx• Blue Moly links:McMasterCarr: mcmaster.com/#bostik-never-seez-blue-moly-antiseize-lubricants/=19pflvgAmazon: amazon.com/Never-Seez-NBBT-8-Anti-Seize-Compound-Temperature/dp/B001HWBSTM• Shows a thin sine bar with hollow rolls attached by the RH/LH screws. Also, shows fixture it was designed for and gives demonstration of the fixture's various configurations.youtu.be/4k261VAbWCU?t=32m27s*Not affiliated with any manufacturer or distributor. Links just for reference.
VERSA-OHM MAKING THE FANBOX ROBRENZ 2015-03-19 | Design, machining, fixturing, and assembly of the fan box for the Versa-Ohm decade resistance box.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
VERSA-OHM WIRE FORMING TECHNIQUES ROBRENZ 2015-03-19 | Wire straightening and forming methods used for the Versa-Ohm decade resistance box. Bending fixture design and construction is covered.Paypal donation paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W64WRAAGMA79J&source=urlSupport through Patreon patreon.com/ROBRENZI am "robinrenzetti" Instagram lots more content there!
