penfold
Ambassador plenipotentiary
- Messages
- 2,116
- Location
- Argyll and Bute, God's own country.
A Burnerd 4 jaw chuck came with my lathe, helpfully it came with no jaws and replacements are unobtainium so I'm pondering what will be needed to make a set. a perusal of some catalogues reveals that most hard jaws are made of case hardening steel, typically 16MnCr4. Controlling dimensions for fit after heat treatment is something I don't know much about and turning an inside acme thread isn't something I've done before.