Hi rich thanks for the info!
Do you mind showing me which grinding but you used? Do you use any oil on it or water or anything? Does it sand through pretty quickly? I'll be using a corded hand drill and ill have the mag on a vice.
I don't even know... I tossed the blister pack. Just get a generic grinder bit that's carbide steel. I tried a hand drill and just about threw it through the wall when it kept slipping, freakin' whirling around and almost taking off my hand. Cussing like Junior Soprano... I would rig the drill in a vise and hand hold the tube. No lube-for some parts I kept a bowl of cold water and dipped the part in question-too impatient to wait for cooling.
Even so, with: Cutting the tube, grinding out the I.D., cutting the end off with the threads, grinding down the threads on a bench grinder to fit them in the tube plus grinding out another tailcap to take a 32650, took hours. With pinched nerves in my neck and carpal tunnel, it sucked.
I really don't like metalwork... I endure it to get to the final result. Too hard on my hands and arms.
Rich