On Tue, 02 Jan 2007 10:10:23 -0500, Michael Horowitz
wrote:

Some years ago, I watched an A&P drill a shank so it would accept a
cotter pin.

Was a metal block into which various sized bolt could be screwn into,
each with a hole perpendicular to the shaft that would guide a drill
bit.

Anyone know what this might be called? - Mike

I would call it a metal block threaded for various size bolts with
perpendicular drill bit guides...

I don't think it has a specific name other than bolt drilling tool or
bolt drilling block.

There is also a V-Block with a series of drill holes that you just lay
on the bolt and have at it. This has the advantage, or disadvantage
(depending on how you look at it) as to allowing you to drill what
ever size hole you want as opposed to what is properly required.
You'll find these around machine shops.


Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com