CNCnutz (Peter Passuello)
Reinstall Mach3 in less than 6 minutes - CNCnutz Episode 104
updated
Can it be done?
How?
What do you do if it is round?
LASER used in this Video
The laser consists of 2 different kits. I added the Air assist later mostly to see how it went. I still have to do some testing but air assist usually helps with cutting and remove the yellow smoke stains from work.
optlasersgrav.com/cnc-laser-upgrade-kits/plh3d-6w-xf-universal-kit-for-cnc-machines
optlasersgrav.com/accessories/high-pressure-air-assist-nozzle-kit
Connection to my MASSO CNC controller
https://docs.masso.com.au/quick-start-guides/laser-engraving-cutting/setting-up-an-optlasers
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We look at what causes it, What problems it causes and how to fix it.
A few cents can save you a lot of heart ache later on.
I suggest you use a 1n4007 power diode.
Cheers Peter
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cncnutz.com/2021/02/x-z-axis-upgrade-part-1-cncnutz-episode.html
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Upgrading the stepper motors
Installing the X axis motor drive.
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cncnutz.com/2021/02/x-z-axis-upgrade-part-1-cncnutz-episode.html
We start with the removal of all wiring, and mechanical parts of the machine before I can start the rebuild.
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Very simple and cheap to make from plumbing fittings.
For more info see: cncnutz.com/2020/12/diy-cnc-pen-holder-episode-250.html
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This video shows how to use your CAM software to make Gcode that will make your machine run smoother. This works for machines running Exact Stop or Constant Velocity. It also take you through how to set up constant Velocity in Mach3 to get the best from your Machine.
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When I first started out on my CNC adventure I used Turbo CNC for my controller and it couldn't do Constant Velocity. All I had was exact stop and having heard about how wonderful it was I couldn't wait to change to Mach3. In the meantime while I saved up to buy the CNC magic beans I had to learn how to produce Gcode from my CAD software software that would run smoothly and not try and shake my machine apart. I turned out to be an easy process but I couldn't wait for the promise of Constant velocity.
Finally I upgraded to Mach3 and there were many wonderful things i could now do but to my disappointment the one thing I wanted turned out to be a disappointment. The realization that constant velocity isn't all it is cracked up to be.
People might say that I didn't set it up properly and maybe they are right, but set up properly or not it doesn't alter the fact that when it turns on it alters the Gcode file that I spent hours working on. This is a big problem with parts that need to fit together and more trouble than it is worth.
I bet a lot of people use it without realizing what it actually does. How many people spend hours looking for a fault that is distorting their parts and not realize that it could be constant velocity doing exactly what it told and distorting your part. You slow the machine down and the part comes out better because CV behaves differently at different speed. It may even turn off at the lower speed.
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This is the result.
For more information and insights check out the write up on my Website.
cncnutz.com/2020/05/making-raised-chair-base-episode-247.html
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It's time to have some fun.
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I received a question the other day about running files in imperial on a metric machine and it seemed like a good topic to cover as it is not the first time i have been asked this. When you first set up your machine you need to choose the unit of measurement that you want to use on your machine. If you live in the USA you will most likely choose imperial and if you live anywhere else you will probably choose metric. Having made the decision are you stuck with your choice or can you change it easily? Fortunately Gcode has some commands built in just for this situation. G20 & G21
So the long and the short of it is that no matter what Native unit of measurement you set up in your machine you can machine any Gcode file given to you in any unit of measure.
Is it advisable? That is a completely different question. While I am not keen to run other peoples Gcode on my machine and any Gcode I make will always be metric I can see where this could be very handy. In these times of makers spaces where a CNC machine is a communal item it is likely that some people will want to work in Metric while others work in imperial. This is where the G20, G21 will shine. Users can design what they want in whatever unit of measure they want and can still machine it on the same machine.
Cheers
Peter
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Welcome back to part 2 of my Vacuum Table build.
In this Video I investigate 2 tabletop designs for their holding ability, and talk about the vacuum I purchased for this project and if I get time to clean up my workshop.
I also I have links to the cad files for those who want them.
In the last video I built the table base from a piece on Melamine coated MDF and sealed the edges of it to prevent air leaks. The one thing I learnt for sure was that MDF is a very porous material and when it comes to air you need to seal it. I sealed mine with several coats of acrylic paint though you could also apply edge banding to the MDF as well. In that case you might want to keep the outside shape square for easier banding.
I also made a top that was plain MDF on which I skimmed 1mm of material off the entire back and 1mm off the vacuum area on the front. This is to open up the MDF by removing the compressed surface to get access to the less dense material for greater air flow. I made the tabletop as easy to make as possible as it is the part that will be damaged while in use and a new one can be made quickly once it has no more life left in it.
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For additional information about this build please visit:
cncnutz.com/2020/02/vacuum-table-revisit-episode-243.html
It was almost 2 years ago that I made my first vacuum table and even today I still get questions about the table. people want to know how it is going and requesting drawings to make their own.
My thoughts were that the old table was a bit more complex than it needed to be and I wanted to make another. This time I wanted to use a base material that would not leak as plain MDF does. I searched around to see what I could find and managed to get some melamine coated MDF. MDF is porus as I found last time but with the major surfaces sealed by the melamine coating I only need to seal the edges. To do this I gave the edges 3 coats to ensure a good seal.
Next I looked at the seal between the base and the top. Last time I simply screwed the 2 pieces together and it seemed to work but this time I bought 2 meters of 6mm round rubber to act as an o'ring. This will seal the top to the bottom and allow me to machine new tops as replacements and also to experiment with as I still have more to learn.
Next I added threaded inserts to attach the base to the top. This will give me a consistent method to attach the top and allow easy replacement. Something to note I didn't screw the top screws down to compress the o'ring. The screw down until they stop turning under gentle pressure and that is all. I do not want to keep the o'ring under constant compression but will allow the vacuum to do this when it is in use and it can return to it's normal state when the vacuum is off. I hope this will prolong the o'ring life.
This time the top has no pockets cut into it but has been left as plane MDF. While in the video I get more than enough sideways holding I don't seem to get much in the way of vertical holding. Does this mean that pockets will improve the table holding or am I missing something. This I hope to find out in the 2nd part of this build at which time I will also release the CAD drawings I used to make the table for those who wish to make their own.
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cncnutz.com/2019/12/making-3d-map-of-new-zealand-episode-242.html
Use the link above for additional information on the build process, tools and materials used.
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teamtrees.org
Here's what it's all about.
youtu.be/U7nJBFjKqAY
Impressive facts about trees. What are they made of and isn't soil.
youtu.be/-PWMQR59M68
Here's how a real Plasma machine runs
youtu.be/3zR9m2dUFh8
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cncnutz.com/2019/09/how-to-make-3d-model-of-your-home-town.html
The key to this project is the website https://terrain.party
This will let you create a model of your home with up to 60km square. It will give you a series of Height maps that you can use to make your model. I looked at the range of maps it gave me and the ASTER 30m maps seemed to be the most up to date with good detail. You can look at each and make your pick of which you think is best. I really didn't see any improvement bu using a smaller area so I would personally get the 60km map and cut it down manually by using the vector boundary method I show in the video.
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cncnutz.com/2019/08/the-completed-console-part3-episode-239.html
consider subscribing to CNCnutz Masso Edition
youtube.com/channel/UCDLVKDi-aTYv7Z7omdaj1jg
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cncnutz.com/2019/08/how-i-desiign-project-part-2-episode-238.html
Check out my new channel
CNCnutz Masso Edition
youtube.com/channel/UCDLVKDi-aTYv7Z7omdaj1jg
Sometimes you have to think of others when you design a project especially if you are thinking of sharing your plans. A lesson I should know by now but sometimes, I forget that taking the easy way out or trying to save material can make a project far more complex than it needs to be.
I forgot that when I did the initial design of this project and had to return to the drawing board literally . While the outcome is exactly the same the ease with which the new version of the project goes together makes the redesign worth the effort.
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On a few days I have been cursing not having it finished.
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cncnutz.com/2019/06/how-i-design-project-episode-237.html
Check out my new channel
CNCnutz Masso Edition
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Have you ever wondered how I design a project?
No?
Oh well, your about to find out anyway. This video is the first part of a series on designing a project from the beginning. Unfortunately as you probably know this sometimes isn't the most glamorous part of the process and to be blunt can be a bit boring. Even worse is having someone trying to pass on their thoughts and plans. At theses times it is best to just nod and smile a lot but this part of the process is important. If someone came up to you and asked you to make them a box then like me I'm sure you would spend the next 5 minutes or more getting as much information about the box as you could. Height, width, depth, material, hinges,handles, finish, etc
The same applies to a project like mine. I have the advantage that I can see in my minds eye what I want and even though my design is being done on the fly I can see the overall finished product. Some Youtubers will present a 3D model of the finished project before they even start on it which is great from a building point of view but I'm also sure that they run into problems as they build it and need to change things as they go. It would take me longer to draw a 3D model of the project than to build it so i just get on with it.
Look at it this way.
If it works it is because you planed it well.
If it fails then it is a prototype to sort out the issues before you build the final one.
Either way the main thing is you are making something.
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cncnutz.com/2019/05/how-to-update-you-vectric-software.html
I've been putting off doing this update for a few weeks now with thought it would make a good Video. Quite often people will ask me for assistance with doing something on VCarve or Aspire and when I ask what version they are using i find that it is Version 6.0 or Version 8.0 when there is no reason that they shouldn't be running Version 6.5 or 8.5
The X.5 versions are a free update to your software which unlike the minor changes within a release which focus on bug fixes the X.5 version add additional functionality. It's like an upgrade only better!
It's free!!!
Why wouldn't you want to install it and take advantage of new features.
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Once you understand how it works naming your axis is simple but those of us that know sometimes forget that is isn't obvious to those who are new to this hobby. It probably wasn't obvious to you when you first started out. If you built from plans or bought a ready to go machine it was all set up for you and you didn't need to think about it. If not you soon have to confront this question. My first build was from a photo I saw and the machine had no gantry to get in the way and was by no means obvious at all.
Some people think axis length has something to do with it but that is wrong. The confusing thing is you and I can say that different axis are the X and both be right but there is only one correct way to name your axis.
It all depends where you stand!
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I've been planning to show how I make Lithophanes for a few years now but somehow never managed to get around to it. this video will fix that and if you want to make some keyrings of your own I will put a link to the Keyring File in the write up.
Hope you enjoy.
Cheers
Peter
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Cheers
Peter
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cncnutz.com/2019/04/mouding-toolpaths-easy-way-to-do-3d.html
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vectric.com/vectric-community/case-study/PeterPassuello
This is the 2nd part of my Hobby Horse build. In the previous episode I created a 3D model from a coloring book picture and this week I am using the model to create a Hobby Horse.
The files are available as part of the Vectric Case Study follow the link below.
vectric.com/vectric-community/case-study/PeterPassuello
If anyone makes a horse I have created a place for those who wish to show their horse on my website. Just follow the link below and email me with a photo. I will add it to the Stable.
cncnutz.com/2019/03/making-hobby-horse-episode-230.html
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For more information pleae follow the link below to the write up associated with this video. i hope you enjoy.
cncnutz.com/2019/03/creating-my-first-3d-model-episode-229.html
Files are available to make your own Hobby Horse by following the link below to the Vectric Case study.
vectric.com/vectric-community/case-study/PeterPassuello
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For more information on this pendant and better detail on the keys please follow the link below.
cncnutz.com/2019/02/install-xhc-hb04-pendant-on-uccnc.html
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Inspired by the last episode a viewer asked a question. Is it possible to create your own Wood stocks in Vectric software as the the options available don't really match the wood he was using. Not only is it possible but it is easy as well.
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I've been looking for a suitable bedside lamp for a while now and this is almost the perfect one. Touch lamp, rechargable, Warm color and dimable. Almost perfect because it isn't heavy enough to stay where you put it and a bit on the cheap side visually. This project solves both problems.
If anyone would like to get one and make the base for it all the details are available from my website using the link below.
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I hope you enjoy.
Cheers
Peter
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cncnutz.com/2018/12/diagnose-your-spindle-with.html
Once you have the spindle working under control of SpindleTalker you can move on to connecting it to UCCNC or Mach3
www.masso.com.au
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Ever been given an oddly shaped piece of wood and been asked to engrave it? This video shows how to hold, and use a photo technique to align your material and vectors so that you can machine exactly what you want.
Sponsored by MassoControllers
www.Masso.com.au
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This video explores the mysteries of the Climb and Conventional cut. This is my personal findings from using my machine. Let me know in the comments below what your experiences are and what way you perfer to cut your parts.
Sponsored by Masso - www.masso.com.au
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cncnutz.com/2018/10/fix-backlash-episode-222.html
Following on from the last video I explore further the problem of backlash on our CNC machines and how we can use backlash compensation to fix it. Before we start we first need to now what Backlash is and what causes it.
Put simply backlash is the effective loss of steps when an axis changes direction. These steps are used to take up the slack in the system before it starts moving in the opposite direction. These steps are not translated into movement in the axis so it doesn't travel the full distance. Backlash is non cumulative so will not increase as the cut progresses.
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cncnutz.com/2018/10/rack-pinion-or-leadscrew-episode-221.html
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Started doing an oil change this afternoon and I found I couldn't remove the filter. Clearly it had been tightened by the incedible hulk so I decided to make a tool to explain to the filter that it was time to go. This is why I love having a CNC machine in the workshop.
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Continuing on from the hose install I am now moving to the Dust collector itself. I own a 1hp basic dust collector with the standard ba at the bottom and a filter bag at the top. While it works well it is a bit of a hassle to empty the bottom bag as well as clean out the filter bag. One option is to install a cyclone inline with the DC hose and have it filter out most of the dust before it reaches the dust collector. Unfortunately I do not have the room for such an installation in my workshop. I want everything to be compact and reamin within the footprint of the existing Dust Collector. To put it another way i want it all.
With a Cyclone out of the question I decided to install a Thein Separator. It is basically a compact version of a cyclone which can collect most of the dust and woodchips before they get to the DC. No cyclone is 100% efficient and due to the compromises employed in the Thein separator design it is less effective than a properly designed cyclone. Some people may argue different but given the simple design and compact nature of the Thein, if it really was better than a cyclone, it would have replaced them years ago.
This is my take on a Thein Separator designed to fit under the Dust Collector.
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I admit it
The hose support I made in the last episode didn't look and work the way I immagined when I designed it. The DC Hose old and not as flexible as it was when I purchased it all those years ago. At the same time I also bought a flexible 4" flexible VentilationDuct and it is still as good as the day I bought it. It has Aluminium on the outside and plastic film on the inside. The plastic walls are very thin and that makes it very flexible indeed. This is not made for use as a dust collector hose and while I'm sure it will not be damaged by dust and woodchips I can't say the same about small peices of wood picked up by the DustShoe. The only thing I have gong for me in that respect is the Dust Ciollector I have is only 1hp and it doesn't pick up too many larger pieces of material. Only time will tell if it will survive but it could be destroyed on it's first time out. I do not recommend you follow my lead in this until it has proven itself one way or another.
I can kiss my 3 year warranty goodbye on it to start with and if it is still working in 3 years I will be astounded.
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cncnutz.com/2018/08/dust-collection-hose-support-episode-217.html
New AutoZero Macro for UCCNC
http://bit.ly/2HVpEQY
Chip's back and he's not happy with the state of my dust collection hose.
Can't say I blame him really and I had a good suggestion from a subscriber, (sorry I can't find his email to give proper credit)
Us a piece of pipe to support the hose and ensure it can't get a sharp bend in it. The sience of air flow in pipes is well beyond me but the basic thing to know is to have nice gentle bends and smooth inside surfaces. The hose I have is far from smooth inside but at least I can reduce the sharp corners.
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cncnutz.com/2018/08/autozero-issue-episode-216.html
This episode is inspired by Ted who was kind enough to share his problem and the solution.
I like a mystery so long as I find out the eventual solution.
Teds issue is that despite using the Autozero script that I demonstrated in receint episodes he is having issues with the cutter cutting into the spoilboad even though it shouldn't. He explained how he is using the machine and everything was good so the issue had to be the machine but what?
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cncnutz.com/2018/08/mach3-or-uncnc-episode-215.html
There are a couple of questions I get asek on aregular basis. 3 times this week already. Should I change from Mach3 to UCCNC and what do I recommend for a first time builder. Mach3 or UCCNC?
2017 Screenset
If you are interested in the Screenset mentioned in the video you can find it here.
http://www.thecncwoodworker.com/uccnc.html
Mach3
As mentioned in the video a recient update to Windows 10 has broken Mach3 preventing it from opening. For anyone suffering this problem you can download the latest version of Mach3 which has the fix applied. The new version is Mach3 R3.043
http://www.machsupport.com/software/downloads-updates
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After looking around town I found that they are no longer made and I would need to make my own. With Time ticking away I made this replacement with some PVC material I had on hand. It came out really well and should last for many years. I may even get carried away and make one from Aluminum.
If anyones wants to make their own great I have put a 3D model on my website which you can scale to whatever size you require and away you go.
cncnutz.com/2018/06/making-new-grate-episode-214.html
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If you do not calibrate your machine then noting you make will be the right size. The larger you make an item the larger the sizing error will be. Depending on what you make with your CNC the lack of calibration may or may not be an issue. If all you do is cut 3D models then any sizing error will go unnoticed but if you are cutting inlays then the penalty for an inaccurate machine is parts that do not fit as they should. Fortunately there is a simple way to fix this problem.
Mach3 and UCCNC have built in calibration that allows you to check real world movement against the calculated movement and then they calculate new steps per unit values automatically for you.
Calculations
The calculations can be a bit daunting and to make things easy for you I have created a spreadsheet you can download that will calculate everything for you.
The spreadsheet can be downloaded from my website along with instructions on how to use it.
cncnutz.com/2018/06/how-to-calibrate-your-cnc-machine.html
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Like tramming the Z axis on your machine to be square to the tabletop, Squaring the X and Y axis is another job you need to complete for your machine to cut accurately. The biggest problem with this is it isn't as simple as grabbing a square and checking it. Machinists squares are far too small for this task and builders squares are not really accurate enough. Even if it was then on a large machine like mine even a builders square is too small and there is nowhere I can put it to reference square from anyway. This is true of most CNC machines but none the less it has to be done and done accurately.
If your X&Y are not square to one another then nothing you cut will be square.
The good news is that it takes very little in the way of technical knowledge and tools to set your axis up square and when you are finished it will be super accurate.
For this we will use Pythagoras's theorem but don't worry if you aren't good with maths. This video will show you a simple method for doing this.
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Following on from the last episode I have made changes to the Vacuum table to get the project back on track. Many thanks to those who provided feedback and suggestions on possible fixes to the problems I faced. In the end I opted for the simplest solution of painting the MDF base and the edges. This sealed the table very nicely and because most of the vacuum was being lost throught the bottom of the table I added a vinyl sheet puchased from a local craft shop for a couple of dollars. It is very effective and enures the perfect seal on the bottom. Once this was done the vacuum was restored along with its holding power. The solution I used was only one of several suggested by viewers all of which would have worked
Suggestions
Use a non porus material for the base like Plastic sign board or HDPE
Use Malamine coated MDF and seal the edges with edge banding.
Seal the MDF with paint, shellac or similar product.
Leave the vacuum running while painting to pull the paint deeper into the MDF to get a better seal.
Cover the MDF with a vinyl or similar coating.
Getting a better seal
Even with the table sealed and maintaining the vacuum the issue of sealing the material to the tabletop remains. With the table flat there are still small paths for the vacuum to escape due to material imperfections. What is needed is come form of gasket to get the good seal and many solutions use Orings. these won't work if you want to cut through the material as I do and making special vacuum bases per project isn't practical.
I remember Micheal, who visited me about 18 months ago, telling me he used some form of material between his vacuum table top and the stock to get a better seal. I can't remember what it was but I had an idea to put a piece of newspaper on the table surface and see how that went. To my surprise and great pleasure it makes a huge difference to the holding power of the vacuum. It will reduse the air flow through the unused holes while alloing the vacuum to build up under the stock. I will also provides a little clearance between the tabletop and the bottom of the stock so when cutting through the cutter won't touch the table surface all going well.
Small Holes
The use of the small holes in each pod looks to be just ideal. The vacuum pulls very quickly but even with most of the pods uncovered or covered with paper the vacuum seems to have good holding power. Had I put 1/4" holes in in each pod the uncovering of just 1 or 2 of them would have meant loss of vacuum on the entire table. It also eliminates the need for sectioning off areas of the tabletop though if I had made it larger it mag have been necessary.
Vaccum source
This is the hardest problem to solve and something you need to be aware of.
Vacuum cleaners are not made to but used with vacuum tables. While they obviously work and are used by many people the restricton of the hose robs the cleaner of the necessary cooling air it needs to keep the motor cool. If you don't cool the motor it WILL burn out. The vacuum I used in part 2 of this video is made by Festool but has been superceeded. It has seperate cooling for the motor so is a good option for this project.
The motor cooling outlet can bee seen as the grill on the front of the cleaner and the exhaust for the vacuum is visible on the left hand side of the cleaner. when you block the hose the exhause on the left stops but the one at the front keeps blowing. the only down side of these is the cost but it is a professional unit made to collect fine sanding dust etc. At over $1000 for one of these I think I will borrow my brothers on the occassions I need it.
Other options are real vacuum pumps though I dont know what size pump is really needed for this application. Ebay has some cheep ones at less than $100 USD but whether it will work with a midsize table top I don't know.
The other suggestion was to convert an air compressor to pull a vacuum. After all while it blows at one end it has to suck at the other. I'm told it can be done quite simply and not loose the compressor function.
I actually have a 2 stage vacuum pump that I used to use as a compressor but its piston seals are damaged and it will not pull a vacuum any more. If I can find a suitable material I may be able to repair it but in the meantime the current setup will work just fine.
Please be aware of ordinary vacuum cleaner limitations.
Well that is all for this project. I am looking forward to using it on an upcoming video so until next time
Cheers
Peter
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Don'y forget to watch Part 2 where we solve the problem encountered here.
This is my attempt at making a Vacuum Table for my CNC machine
I finally have gotten around to making a vacuum table for my machine. I was planning to make one the fill size of my tabletop but decided it was a bit ambitious for a first attempt. How right I was.
The idea for this build was built on one simple idea. Large holes for the pods fed by tiny holes such that even if many of the holes are uncovered the vacuum cleaner that I plan to use fore this projecj will still be able to keep the vacuum up to the rest of the pods. This is the mistake made in many designs that I have seen. They use large holes which as soon as they are uncovered, the vacuum source can't keep up with the air pooring in through the holes and the rest of the pods loose their vacuum as well.
By keeping the holes small the effect of uncovering these holes is minimal and the rest of the pods should keep their vacuum. The price to pay for this it the increased time to pull a vacuum on the individual pods but this is very minimal.
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