[Johnson] Johnson KW Matchbox

[David C. Hallam]

Get some Lock-Tite and put a drop on the set screw.  Just don't get the 
kind that is intended for screws that are not to be removed.

David
KC2JD/4

Steve wrote:
> I have two of the Johnson KW Matchboxes.
> 
> The TUNING knob on one and the MATCHING knob on the other were loose on 
> their shafts recently and I tightened the knobs' set screws.
> 
> I haven't kept any notes, but the knobs seems to loosen on the shafts 
> often enough that it's an annoyance. I don't recall if it is the same 
> knobs that keep loosening on their shafts.
> 
> I guess that with use and over time, the set screw backs out a little, 
> thus allowing the knob to freely turn on the shaft.
> 
> Is there a method to tighten the set screw and expect it to stay tight?
> 
> Thanks.
> 
> Steve K8JQ
>