[TheForge] drill bit stock

[Justin Fellenz]

I had an interesting experience with drill steel--I tossed a broken bit
into the forge to see whether it might make a good damascus layer and
it turned into melted sharp cheddar cheese, a kind of grainy mess with
a less viscous liquid around it. It just drooled off the tongs. It
didnt seem to be hot enough to be burning, though...wonder if you could
heat the peice enough to more or less liquefy the drill bit?

Or you could take it to red and sacrifice a drill bit, see if you could
drill it out hot...no idea if that would work.

Justin
--- Ralph Sproul <brhlbsmt at mcttelecom.com> wrote:
> Hi Roger.  Many of the drill bits are high speed steel (or better
> classified
> as M2).   It is an air hardening tool steel that has tungsten in it
> (as well
> as other alloys).   Odds are you won't be able to get anywhere trying
> to
> anneal it.
> 
> How about a yellow heat and punch it thru? - that won't make for a
> very
> redoable hole - but it may get the tap out.........unless it's not a
> thru
> hole.
> 
> This reminds me of the fourth hole I tried to tap in a finished air
> hammer
> ram one day..........I ended torching the dam corner off, welding it
> up,
> redrilling and taping it out again - took 7 hours to get back to
> where I had
> started from, but it was a large piece of square stock I'd taken ages
> to
> find.
> 
> Ralph
> 
> ----- Original Message -----
> From: "Roger Olsen" <erik at methow.com>
> To: "theforge" <theforge at mailman.qth.net>
> Sent: Tuesday, May 31, 2005 11:50 AM
> Subject: [TheForge] drill bit stock
> 
> 
> > Does anyone out there know the type of stock used in the common
> hardware
> > store high speed drill bits for steel.  Do you per chance know the
> steps
> > for annealing them.
> >
> > Yes,  I ask because I broke a drill bit in a piece of stock where
> > welding, reforging, and repositioning was not an option.  I tried
> all
> > the tricks as well as attemting to anneal as I would a common high
> > carbon steel and drill it out but it seemed to have little or no
> affect.
> >
> > Thank you,
> >
> > Roger Olsen
> >
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