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Unimat tangential tool holder

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John Haine20/12/2017 17:49:12
2794 forum posts
140 photos

Having just acquired a Unimat 3 as I wanted a small lathe for quick jobs and especially ones needing high spindle speed, I'd like to make a tangential tool holder for it. Is anyone aware of a design specifically for the Unimat (or the C0) please, before I design my own?

Paul Lousick20/12/2017 21:15:27
1264 forum posts
509 photos

Hi John,

There have been lots of previous posts on MEW about tangential tool holders. Enter "tangential" into the Search for: option at the top of the page. You may have to scale down some of the designs to suit the Unimat.


John Haine20/12/2017 21:36:13
2794 forum posts
140 photos

Thanks, yes. I do know that, and have done such a search without finding anything specific which is why I'm asking if anyone knows of a Unimat specific design.

Michael Gilligan20/12/2017 22:39:19
14641 forum posts
634 photos


Sorry, I've seen nothing specific to any version of the Unimat, but ... 

Here is one designed for the Taig [a.k.a. Peatol] lathe, which might be a good start:




Edited By Michael Gilligan on 20/12/2017 22:42:00

John Haine20/12/2017 22:51:13
2794 forum posts
140 photos

Thanks Michael, that's a great find!

John Haine05/12/2018 18:33:26
2794 forum posts
140 photos

OK, well it's nearly a year since Michael pointed me to that design for the Taig, and having fitted the new collet spindle it was time to get the toolpost sorted. A 25mm cube of FC steel had this hiding inside it.


Here's another view taken off the lathe with some turned bits of metal, sitting on the headstock.


On the left is a bit of stainless, shank of a special bolt lying in the scrap box. Turns nicely to a good finish at ~ 1000 rpm. Next to it is 8 mm aluminium, turned down to 6 mm in one pass running about 800 rpm (I think).


This is particularly what the lathe is for - turning small diameter silver steel for pivots, this at ~2000 rpm. The tool works beautifully. A set of cheap and nasty carbide tools came with the lathe, I did have a go with them but they were awful so I didn't have high expectations, but very pleased. An interesting exercise in angular milling with my very rarely used swivel and tilting vice.

More pics in the album.

Michael Gilligan05/12/2018 21:12:02
14641 forum posts
634 photos

Splendid job, John yes

... looks to be very successful.


John Haine05/12/2018 21:54:56
2794 forum posts
140 photos

Thanks Michael, quicker and easier than I expected, once I puzzled out the description of how to get the compound angles.

Brian Sweeting05/12/2018 22:31:47
393 forum posts
1 photos

Here is one from earlier with handrawn plans...


Michael Gilligan05/12/2018 22:45:38
14641 forum posts
634 photos
Posted by Brian Sweeting on 05/12/2018 22:31:47:

Here is one from earlier with handrawn plans...



But that would be somewhat oversized on John's lathe.


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