I use ER40 collets and my lathe also but before I got my lathe I would wrap the body in a strip of leather and clamp onto it with vise grips or pliers. To take off the cap I drilled a piece of scrap hardwood to 5/8" and cut a slot from one side. A "C" clamp tightened down and some heat and they come off pretty good. Best to use a tight grained wood like maple.
I flat top all my valves now.
This message has been edited by GunNut10 from IP address 126.96.36.199 on May 15, 2017 2:53 PM
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