Uploaded July 2020 | Updated September 2026, 39 minutes ago
Alternate methods of rotary broach tool grinding. Hex and square broach tools can be made using a lathe, mill or bench grinder
A rotary broach lets you cut internal (and external) features such as a hex, spline or a square into an existing hole. This is very useful to make custom tools.
Rotary Broach build here:
youtube.com/watch?v=UKgHR4gcTyo&feature=youtu.be
Built for the TMC2020 competition
Plans available here:
etsy.com/au/listing/831959563
Note; plans are revised based on my prototype, and are subject to change with improvements.
Drop a comment or an email (go to my 'about page' for email address) if you are interested in buying a rotary broach tool or just the tool bits themselves. If I get enough interest, I will make a batch.
Follow me on instagram for behind the scenes and other random stuff
instagram.com/tommygun_machining
Steel used is from Tyne Valley Metals. Check them out for a variety of materials:
https://www.ebay.com.au/str/tynevalleymetals
facebook.com/tynevalleyenterprises
I plan to do more videos soon where I show where certain steels provide benefit. Stay tuned.
Joe Pieczynski's tool grinding video here:
youtube.com/watch?v=yu02RLpq_K0
Eccentric Engineering (Bench grinder sharpening system and more)
https://www.eccentricengineering.com.au/
Crag's workshop demonstrated a simpler bench grinder method here:
youtube.com/watch?v=h42Yw2SH_7s&t=2s
MAKE SURE YOU COVER YOUR WAYS BEFORE GRINDING
I didn't cover my lathe as well as I should have but I made sure to thoroughly wipe everything afterwards
Alternate methods of rotary broach tool grinding. Hex and square broach tools can be made using a lathe, mill or bench grinder
A rotary broach lets you cut internal (and external) features such as a hex, spline or a square into an existing hole. This is very useful to make custom tools.
Rotary Broach build here:
youtube.com/watch?v=UKgHR4gcTyo&feature=youtu.be
Built for the TMC2020 competition
Plans available here:
etsy.com/au/listing/831959563
Note; plans are revised based on my prototype, and are subject to change with improvements.
Drop a comment or an email (go to my 'about page' for email address) if you are interested in buying a rotary broach tool or just the tool bits themselves. If I get enough interest, I will make a batch.
Follow me on instagram for behind the scenes and other random stuff
instagram.com/tommygun_machining
Steel used is from Tyne Valley Metals. Check them out for a variety of materials:
https://www.ebay.com.au/str/tynevalleymetals
facebook.com/tynevalleyenterprises
I plan to do more videos soon where I show where certain steels provide benefit. Stay tuned.
Joe Pieczynski's tool grinding video here:
youtube.com/watch?v=yu02RLpq_K0
Eccentric Engineering (Bench grinder sharpening system and more)
https://www.eccentricengineering.com.au/
Crag's workshop demonstrated a simpler bench grinder method here:
youtube.com/watch?v=h42Yw2SH_7s&t=2s
MAKE SURE YOU COVER YOUR WAYS BEFORE GRINDING
I didn't cover my lathe as well as I should have but I made sure to thoroughly wipe everything afterwards
