Making a tool holder for lathe inserts

Advert

New Replies

Report Bug

Help/FAQs

Making a tool holder for lathe inserts

This topic has 16 replies, 9 voices, and was last updated 8 October 2024 at 17:06 by old mart.

Viewing 17 posts - 1 through 17 (of 17 total)

Author

Posts
4 October 2024 at 04:23 #757318
Steviegtr
Participant
@steviegtr
Hi everyone. I have just made a toolholder that iv’e been wanting to do for the last 2 years. A friend gave me some very good expensive lathe cutter inserts, but I did not have a toolholder for them. Hence these 2 video’s of me making one. I hope you enjoy.

Steve.
Advert

4 October 2024 at 13:32 #757376
Brian Wood
Participant
@brianwood45127
The tip of the insert needs support, it could well break off otherwise

Regards Brian
4 October 2024 at 14:08 #757379
bernard towers
Participant
@bernardtowers37738
Yes needs to be directly under the tip and angled to the same degree as the tip.
4 October 2024 at 15:32 #757381
Fulmen
Participant
@fulmen
You can run an insert without tip support, but it will of course limit how heavy cuts it will handle. Several of my holders are discarded from a machine shop due to damaged seats, and they hold up just fine for hobby use.
4 October 2024 at 16:11 #757393
Vic
Participant
@vic
My last tool holder was £14 on eBay and came with an insert. Not sure it’s worth making them at that price unless it’s something special?
4 October 2024 at 16:45 #757397
Dave Halford
Participant
@davehalford22513
They are solid triangle inserts, see how many you can find.
4 October 2024 at 16:55 #757400
Ian P
Participant
@ianp
100% solid except for the hole in the middle.

Ian P
4 October 2024 at 17:07 #757402
noel shelley
Participant
@noelshelley55608
If I had a good stock of odd inserts I would use the spark eroder to create the pocket. From passed work I would expect it to take about 10 mins. A tip should make an electrode and the over cut is about 4 thou. Noel
4 October 2024 at 17:25 #757409
Steviegtr
Participant
@steviegtr
On 4 October 2024 at 16:11 Vic Said:

My last tool holder was £14 on eBay and came with an insert. Not sure it’s worth making them at that price unless it’s something special?

Hi Vic. I searched ebay & the only holder I could find that would take those inserts was a 20mm industrial one , which is way too large for my little lathe. Also sometimes, in fact many times I make things that cost nothing. Some of the items as you say can be bought for a little money. However I like to dabble in the workshop.

Steve.
4 October 2024 at 17:29 #757411
Steviegtr
Participant
@steviegtr
As we all know there are so many different cutter tips out there. I have boxes of them , which I will post a little vid of showing them. Nearly all of them were gifted to me from friends. Unfortunately quite a few from departed friends families.

So I will have to make some more holders for them.

Steve.
4 October 2024 at 22:55 #757457
Steviegtr
Participant
@steviegtr
Just a short video of the many different types of cutter inserts. I am sure there are many more on the market.

Steve.
4 October 2024 at 22:55 #757459
Vic
Participant
@vic
On 4 October 2024 at 17:25 Steviegtr Said:

On 4 October 2024 at 16:11 Vic Said:

My last tool holder was £14 on eBay and came with an insert. Not sure it’s worth making them at that price unless it’s something special?

Hi Vic. I searched ebay & the only holder I could find that would take those inserts was a 20mm industrial one , which is way too large for my little lathe. Also sometimes, in fact many times I make things that cost nothing. Some of the items as you say can be bought for a little money. However I like to dabble in the workshop.

Steve.

The one I bought had a 16mm shank. Too big for my little 8 1/2” x 14” but I took 2mm off the bottom with a carbide mill. The TNMG’s have 6 cutting tips so very economical to use. I know what you mean about making your own tooling though.

Edit: Even cheaper now. Only £10.80. But no insert.

https://www.ebay.co.uk/itm/196694256916?_skw=TNMG+TOOL+HOLDER&itmmeta=01J9CRH331QTXADNGW7SZ42KFC&hash=item2dcbe42d14:g:28wAAOSwu-Vm~5S4&itmprp=enc%3AAQAJAAAA8HoV3kP08IDx%2BKZ9MfhVJKm5uQd2ufgZiW2iRlg80E4c%2BoXqBxOjklZhWeyxU9MKNDBED96ZvCFdGF8bw0jfR4CUJjL49zXNapK6OPWa8PmBM11d3%2Fbw9DgL%2FPXDpfHAC2zTByVpPMrgN3GNLW2F4sye7p%2FtIm6qbv0vC2P8UiRzF0SeW2PnL0x%2B9cjEt8V%2BIjcpUc%2BTVW7FD2R5xMtevvg%2By%2BDS4uYqnPIhG35kBY%2B6WliJ7sDQZOGZFPzNQ88VnC34gMNhRM0UH9Qo%2BKtw%2BI0I7v9dNeRB7cwf7KlFa3%2BzZ71VaNZEHMjI3oXUZCIjpg%3D%3D%7Ctkp%3ABFBMzrHEmMtk
4 October 2024 at 23:25 #757462
Steviegtr
Participant
@steviegtr
Hi Vic. I think I saw them once but ignored as the holder was left hand Meaning pointing to the right & not the left.

Steve.
5 October 2024 at 08:49 #757482
Vic
Participant
@vic
The picture shows both left and right hand but the description does say left. Maybe that’s why it’s a few quid less? Mines very well made and the shank was of Hardened steel so I had to take it slow with the carbide mill when I trimmed it down. Recommended if you can get one to fit your lathe, albeit with some modification.
7 October 2024 at 20:26 #757871
old mart
Participant
@oldmart
Steviegtr’s toolholder would be better if he had tilted the tip of the insert downwards 7 degrees to give it the correct clearance. For his straight type, the blank could have been tilted in the milling vise, and the clamping screwhole drilled and tapped in the same setup. All neutral inserts have their seatings dipping for clearance because the face is 90 degrees for double sided types. The pictures in Vic’s advert show the dip, which is on the axis between the tip and the centre of the insert, whichever way it is pointing relative to the tool shank.
7 October 2024 at 20:39 #757876
Steviegtr
Participant
@steviegtr
Hi old mart. I take it you never watched the video. Showing tilting in the vice. I only used 3 degree tilt. I also drilled the hole for the pin at same time.

Steve.
8 October 2024 at 17:06 #758015
old mart
Participant
@oldmart
3 degrees would be fine for home turning, the 7 that I mentioned is the common angle for neutral inserts of all shapes, as I have measured them. I have a small 3″ vise with multiple movements which is my prefered method for holding custom made insert holders. The last one was for holding round double sided milling inserts for use in lathes. The inserts are doublesided and the thickness is almost half the diameter. I tilted them for a righthanded toolholder and made the front face about 0.010″ low on purpose.
Author

Posts