Hardened metal and home shops.

[Highpower]

Thanks for that Steve.

But I was thinking about more of a "spot" annealing approach than doing the whole part. I only need to extend the parallel slots & grooves forward by 1-3/16".

   

I had an idea in my head for this shank, (SDS-Max) but it's turns out to have been a BAD idea. Oh well.