I had access to O1, used it for the body and all the parts, the jaw inserts got glass hard, the body I annealed to about RC 35. It only opens one inch. is two inches wide. I can't find a picture of it right now.
I do not have any acme taps or dies for the lead screw. I do however have some left over 5/8-10 RH acme precision rod left over from my surface grinder job. I could buy a brass insert and press it into the lead screw block. Then I could buy a few acme nuts to fit onto the screw to make my handle proper.
The other option is to just single point a 60° thread.
Suggestions?
I have left hand taps if interested.......1/2 and 5/8 I believe, but would have to verify tomorrow.... will probably never use them again, but willing to loan
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