Thread: My " Solingen type " collars

This was old ideea, to document some work i do on my lathe. Unfrotunately or not, my phone hit the floor hard and countless attempts to resuscitate it were not successful. So, I was forced to buy a new phone , with a proper camera, and this is what it can do:

https://www.youtube.com/watch?v=YGrdBgWk2zs

Here can be seen my lathe doing " solingen type" collars , from 1/4" nickel silver rod, turned down to 1/8" OD.
1/16" hole was allready drilled.
The alloy is 18% nickel, with some lead in it. I have 18% nickel alloy, without lead, that turns like copper, bad and ugly. It ain't fun working with leadless nickel silver.
I have made this fixture without knowing that is named " gang turning" and is used in industry on large scale. I made several atempts to put in close proximity several profiled cutting tools and this was the most succesfful.
First tool, the profiled one, is cutting the outside profile, second makes the chamfer, third make the cut-off cut, and the burr raised by the third is removed by hand with a steel scraper.
I don't do regulary do solingen collars in nickel silver , this was special order .

That is my lathe , Tos MN80a , and this is the fixture used :

His collars really are top notch. I’ve used them several times.