Hey Gents, I just finished up a Bolt knob conversion on a Remington 541T .22 lr for a hide member. It took a little bit to make up a fixture to do it on the lathe, but I'm pretty happy with the end result.
I had intentions on just turning down the old handle into a 10/32 shaft, then making an extension with 5/16 x 24 threads on the end for whatever bolt knob I wanted to use, but the metal in the bolt is too soft. I had to cut the threaded shaft off, face the old handle then drill and tap and insert a hardened steel 10/32 screw to work off of. The benefit about putting it in the fixture on a lathe is that I can indicate off of the old handle to within .0005", so when I drill and tap, the hole is perfectly centered in the handle.
Anyway, here are some pictures. I'm working on CZ 452 and Ruger Mk 77/22 fixture next. I might just redesign the CZ handle assembly and make my own with a threaded handle so you can put whatever you want on it.
BTW, the customer is going to do the finishing, so this is why its still in the white.
Enjoy
I had intentions on just turning down the old handle into a 10/32 shaft, then making an extension with 5/16 x 24 threads on the end for whatever bolt knob I wanted to use, but the metal in the bolt is too soft. I had to cut the threaded shaft off, face the old handle then drill and tap and insert a hardened steel 10/32 screw to work off of. The benefit about putting it in the fixture on a lathe is that I can indicate off of the old handle to within .0005", so when I drill and tap, the hole is perfectly centered in the handle.
Anyway, here are some pictures. I'm working on CZ 452 and Ruger Mk 77/22 fixture next. I might just redesign the CZ handle assembly and make my own with a threaded handle so you can put whatever you want on it.
BTW, the customer is going to do the finishing, so this is why its still in the white.
Enjoy