Sorry Joe, 72 years has taught me not to loan out tools, hope you understand.
The drill bushing is a piece of O1 drill rod that I got from
McMaster Carr, it comes annealed so it's machinable. After
turning it on the lathe, I TIG welded it to the ViseGrips then
heat treated it by bringing it up to 1600°F which is just a
little above orange then quenching it in oil. That gave me a
Rockwell hardness of around 60c-65c.
The chamfer in the end centers the bushing on the rivet head as
you can see in the picture. I drilled just deep enough that the
head was off the shank then the rest of the rivet just about
falls out with out any damage to the grill parts.
Denny Graham
Sandwich, IL
