12-08-2013, 08:23 PM
I got started on an ER collet chuck today. Got the internal threaded side bored out and the thread relief front and back cut today. Hopefully I'll have the threads cut and the part mounted on the spindle by tomorrow night.
![[Image: 9l2a.jpg]](http://img268.imageshack.us/img268/1293/9l2a.jpg)
Welded a short piece of HSS to a bar to cut the thread relief at the back if the bore, worked great.
![[Image: 8u0w.jpg]](http://img19.imageshack.us/img19/9940/8u0w.jpg)
Hard to see the two relief grooves, my phone didn't want to focus on the bore?
![[Image: gq3o.jpg]](http://img196.imageshack.us/img196/8139/gq3o.jpg)
Shawn
Welded a short piece of HSS to a bar to cut the thread relief at the back if the bore, worked great.
Hard to see the two relief grooves, my phone didn't want to focus on the bore?
Shawn
Shawn, proud to be a member of MetalworkingFun Forum since Nov 2013.