John Stevenson gave me a lead to this supplier of tooling for model Engineers.
They have some interesting stuff and am sure more will be added as the company expands. They are called Emvio https://emvioeng.com should get you to their site.
Having a Tormach mill with an automatic Tool Changer I need plenty of ER collet holders but importing them from the USA makes them very expensive. The collet holders I have from them are ER20. A look on the Emvio site showed that they have ER25 & ER 32 Collet holders with shanks suitable for my Tormach spindle.
The ER 25 holders are £22 each , I decided to get three of these and at the time I applied for the Easter discount but unfortunately the code didn't work when I tried the number while checking out from their webshop. There was a place on the payment screen where you could make any comments so I mentioned that the discount code didn't work for me.
On Receiving the note on my order the Proprietor George offered me an extra tool holder for £5 to make up for the loss of the discount which I thought was very reasonable.
The holders arrived today, They are extremely well finished and well packaged in plastic bags inside a hard plastic box with plenty of anti corrosion oil on them.
![dsc_3531.jpg dsc_3531.jpg](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)
The ER25 Collet Holder in it's packaging.
The Holders arrived this morning so I thought I would give them a try in the mill. I needed to mill a bracket from 1 1/4" thick Aluminium alloy using a 10mm End Mill. The previous bracket I machined using the same cutter was ok but there was some chatter from the cutter but much to my surprise when I used the new ER25 Collet Holder there was absolutely no signs of chatter.
I'm not sure why the chatter disappeared with this holder, maybe they get more dimensionally correct than the Tormach ones or maybe them being slightly larger and having more mass they dampen the tendency to chatter better, Either way I can say I am well pleased with my purchase. Another bonus is that I will be able to hold some of my larger end mills now.
![dsc_3541.jpg dsc_3541.jpg](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)
The ER32 Collet Holder with 10mm End mill in the Spindle of my mill.
For any Tormach owners in the UK here,s a cheaper way of getting collet holders for your machine.
I notice from their shop that they sell Stepper Motion Control boards, Tool Holders and Collets, Ballscrews and 3D printers.
I should add that I have no connection with this company other than being a satisfied customer.
Bob Rodgersn