[Boatanchors] Removing knob with steel set screw

[rbethman]

Ian,

Can you get a piece of string or harness lacing slid between the knob 
and the panel?  Perhaps do this from two different directions, 
essentially twice, and use that to apply tension to the knob.

This particular problem turns up on MANY different pieces of equipment 
and turns out to be the set screw was tightened too far, upsetting metal 
on the shaft.

Bob - N0DGN

Ian Wilson wrote:
> I have a Johnson Viking 122 VFO. The band change knob will turn freely on the
> shaft if I loosen the set screw, but it won't pull off the shaft.
>
> The VFO is mounted in an ugly chassis/PSU that I would like to free it from.
>
> I can't see enough of the shaft to grab hold of it, so any pulling force will be
> applied to the switch, probably with disastrous effects.
>
> Is there anything I can do other than cut the knob off the shaft?
>
> 73, ian K3IMW
>