[Boatanchors] Help on drilling out knob setscrew

[Jerry K]

A last ditch nuclear option I've had to use a couple of times is a 
Dremel with a small carbide or diamond-grit stone. After the dust 
settles and the knob is off, drill out the damaged hole and tap it for a 
fatter set screw. Careful grinding with a small stone usually causes 
less collateral damage than a drill bit. Small EZ-outs are available but 
don't work well in shallow holes like a set screw head. Finally, in 
aluminum knobs I use a tiny touch of anti-seize on set screw threads to 
circumvent future problems.
Jerry W5KP

LeeCraner at aol.com wrote:
> I've got an aluminum knob on an old rcvr with a completely rounded out 
> allen head setscrew.  I've attempted to drill out the set screw using 
> high speed steel, colbalt and tungsten drill bits, all to no avail.  
> Seems this setscrew is harded steel, harder than any drill bit I can find.
>
> Any ideas on drilling this out, guys? 
>
> Thanks in advance.
>
> 73
> Lee WB6SSW
>
>
>
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