I was disassembling a newly aquired Staley Bed Rock 606 in preparation for cleaning and restoration and I inadvertantly damaged the threads of the adjustment nut stud slightly. I normally would use two nuts to safely grip the bolt but being this is a left hand thread finding these nuts was not practical. I still have not freed the stud so I have two option:
1) Find a way to remove this stud from the frog without breaking the casting and repair the stud by chasing new threads (either by hand or by finding the appropriate die). The adjusting nut will still thread onto the stud but it is a tight fit.
2) Sacrifice the stud to assure the frog casting stays intact and replace the stud.
How would you proceed? Any info or sources for a 1/4" 24 die ( or is it a 9/32" 24?)? Any sources for a replacement stud? Incidentally, I'm looking for a 1-1/4" adjustment nut for a different plane. I'd like to replace the 1" nut that is period correct with a larger nut as all my other planes have a larger nut and I find them more comfortable to use.
Thanks for any help that can be offered,
-Andrew