[Boatanchors] Help on drilling out knob setscrew

[Robert Nickels]

BOB wrote:
> If you can get a carbide drill of the right dia. and run it fast 
> enough it will drill any hardened steel. You might have to find a 
> machine tool supplier.
>
That was going to be my suggestion as well.  I had to drill out two 
setscrews each on about a dozen knobs on a Hallicrafters HT-20 that 
suffered corrosion, not a single one would budge!

Have to admit I'm puzzled as to how the hex head got rounded out if the 
screw is made of such tough hardened steel.   But I'm sure you can drill 
it out with a carbide bit.

73, Bob W9RAN