I could use a set of soft jaws for my Pratt-Burnerd 3-jaw, and after a look at prices I'm considering making my own...
I think I have the scroll geometry worked out, so has anyone else attempted this, any suggestions for suitable materials? The 'top' jaw's no problem (could be ally or whatever's handy), but the jaw base (engaging with the scroll) needs to be hardenable yet dimensionally stable... I can't see an easy way to grind to size after hardening, so I think I'll need to machine to size and hope it stays on size after heat-treatment... Eek!
Is my best bet to make 'em in a low-carbon steel and case-harden, or use a through-hardening steel and allow for material expansion?
Any recommendations welcome!
Dave H. (the other one)
I think I have the scroll geometry worked out, so has anyone else attempted this, any suggestions for suitable materials? The 'top' jaw's no problem (could be ally or whatever's handy), but the jaw base (engaging with the scroll) needs to be hardenable yet dimensionally stable... I can't see an easy way to grind to size after hardening, so I think I'll need to machine to size and hope it stays on size after heat-treatment... Eek!
Is my best bet to make 'em in a low-carbon steel and case-harden, or use a through-hardening steel and allow for material expansion?
Any recommendations welcome!
Dave H. (the other one)
Rules are for the obedience of fools, and the guidance of wise men...
(Douglas Bader)
(Douglas Bader)