Utilize a triangular file to make a die out of any nut. A die is utilized to bring back the threads on a bolt. You need to cautiously screw it on to and back off of the ruined threads, using a couple of drops of oil to lubricate. Get rid of the metal shavings and your completed
TIPS FOR IMPROVEMENT
- Maybe stainless steel would be good for strength. Or m8 locknuts which are pretty much hard tool steel.
- To harden it before use by heating to red hot and quenching
- especially good if you quench it in something like used motor oil which will add carbon
- Don’t forget that you will need GOOD sharp files.
Sourced from: Instructables.com