Tangential (diamond) Tool Holder

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Jan 6, 2021, 01:42 PM
Crusty

6 Attachment(s)

Tangential (diamond) Tool Holder

After seeing Celsoari's effort I decided to learn about Tangential Tool Holders and to make one. Here's my finished holder.

Attachment 37751
Side view in QC mount

Attachment 37744
End view

Attachment 37745
Top view (see the diamond)

It uses a common ¼" lathe cutting tool, flat ground on the end at a 30º angle from the point. The holder itself rakes the point forward 12º and inward 12º and the holder was made so that the cutting tool is rotated 45º from parallel to the ways. After using it some, I'll probably make right and left hand holders too with the cutting tool parallel for more options when turning or facing. Since the tool is very rigid it cuts beautifully in aluminum and steel (I'd never seen 3' long thread like chips before), and resharpening to a pristine new edge takes less than 5 minutes with a bench grinder jig I also made. The Caswell black oxide finish turned out nice and the process is a lot easier than anodizing aluminum for procedural comparison.

Attachment 37746 Attachment 37747
Aluminum ________________ Steel

Holding it at all the correct angles for milling was a challenge but this configuration worked well without having to buy anything to get 'er done.

Attachment 37748
Jan 7, 2021, 12:05 AM
DIYer


Thanks Crusty! We've added your Tangential Tool Holder to our Tool Holders category,
as well as to your builder page: Crusty's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-tangential-tool-holder-19"> <img src="/uploads/241662/homemade-tangential-tool-holder-19.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-tangential-tool-holder-19">Tangential Tool Holder</a> <span> by <a href="https://www.homemadetools.net/builder/Crusty">Crusty</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/tangential'>tangential</a>, <a href='https://www.homemadetools.net/tag/tool-holder'>tool holder</a> </div> </div> </div> </div>
Jan 7, 2021, 02:41 AM
Crusty

3 Attachment(s)

Here's some more pictures that hopefully show more. This thing is surprisingly difficult to take pictures of which show any detail.

Attachment 37753____ Attachment 37754____ Attachment 37755
Jan 7, 2021, 01:52 PM
metric_taper

Quote:

Originally Posted by Crusty

Attachment 37748

Interesting setup on the mill. Looks like a fun compound angle setup.
What is that mill, horizontal and vertical.
Also, seems you either have no walls on your machine shop or large doors that are opened to see the outdoors.
Jan 7, 2021, 02:12 PM
Crusty

1 Attachment(s)

It's commonly known as Shade Tree Machine Works hereabouts. I keep my tools wrapped with oil soaked cloth and covered with tarps, and wrap up time at the end of the day is significant but ya make do with what ya got. I generally smell like a truck stop (and feet) from the petroleum products in liberal use.

It's a Grizzly G0727 Combo Mill. It does a beautiful job planing in horizontal mode and with adjustment not too bad in vertical. I upgraded it to a ¾HP 3 phase motor and a VFD and it does a fine job at all speeds now. My Dodge Ram power feed on it is still working adequately too.

Attachment 37756

The biggest challenge with the fixturing was making it all fit in the limited headroom.
Jun 25, 2023, 02:16 PM
celsoari

Quote:

Originally Posted by Crusty

After seeing Celsoari's effort I decided to learn about Tangential Tool Holders and to make one. Here's my finished holder.

Attachment 37751
Side view in QC mount

Attachment 37744
End view

Attachment 37745
Top view (see the diamond)

It uses a common ¼" lathe cutting tool, flat ground on the end at a 30º angle from the point. The holder itself rakes the point forward 12º and inward 12º and the holder was made so that the cutting tool is rotated 45º from parallel to the ways. After using it some, I'll probably make right and left hand holders too with the cutting tool parallel for more options when turning or facing. Since the tool is very rigid it cuts beautifully in aluminum and steel (I'd never seen 3' long thread like chips before), and resharpening to a pristine new edge takes less than 5 minutes with a bench grinder jig I also made. The Caswell black oxide finish turned out nice and the process is a lot easier than anodizing aluminum for procedural comparison.

Attachment 37746 Attachment 37747
Aluminum ________________ Steel

Holding it at all the correct angles for milling was a challenge but this configuration worked well without having to buy anything to get 'er done.

Attachment 37748

Excelent job my friend
greetings
Celso Ari