[modeleng] Re: Piloted "D" Bit

Al,
Just a thought.
Drill a hole were the pilot should be,slightly under the size of the pilot.
Before quenching it, insert pilot in the hole (separate piece)
The pilot will be held by the contraction of the metal, and will not 
warp, as it was never heated...

Cheers
Patrick

Allen Messer wrote:

>I need to make a "D" Bit with some extra reach to it
>in order to counter-bore some Allen head bolt seats in
>a hard to reach place.  I plan to make it out of
>Silver Steel and harden it.  How  it is possible to
>make one wherein the "pilot" won't warp during the
>hardening process?  I've tried it a couple of times
>and the pilot wants to warp when quenching out.  TIA
>
>Al Messer
>
>
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