09-13-2015, 07:23 AM
When I was an apprentice a couple of years ago
we went around the Dormer Drill factory in Sheffield (UK). The main drill body was HSS and the shank was med/high carbon steel the two blanks were butt welded together. Although the shank is softer than HSS it is hardened slightly at the factory, and because it is a med/high carbon steel it is possible to harden it.
Which is what Rob did.
DaveH
![Big Grin Big Grin](http://www.metalworkingfun.com/images/smilies/biggrin.gif)
Which is what Rob did.
![Smiley-eatdrink004 Smiley-eatdrink004](http://www.metalworkingfun.com/images/smilies/smiley-eatdrink004.gif)
DaveH