I turned a small pistol primer firing replacement for a standard nipple on my TC back in the 70's. I used my poor man's lathe. A file for turning the steel, a drill, a 1/4" x 28 tap and die and an adjustable electric drill held in a 5" bench vise for the lathe. It worked very well. The "plans" for it were a couple pictures in Musket Blasts, way back in the 70's.