Impedance switch knob recommendations

[eddie25]

I often use use those ~$10 three-way selector switches for impedance and have found that any standard knobs will almost always start slipping with heavy use. Anyone have any ideas for a knob with a heavy duty set screw?

[xtian]

Consider drilling or filing a notch in the shaft for the set screw to fit into.

[iknowjohnny]

Yeah, even just a flat spot with a file, and it would take very little to make it impossible for the knob to slip barring the set screw coming loose.

[roberto]

I'm the only one who prefers to have dedicated outputs instead of the switch?

[M Fowler]

I can't say that I've had a problems with the knob slipping on my selectors but if I did I would note where the set screw markings are on the switch shaft and drill a divot in the shaft for the set screw to sit in so no more slipping.

Mark

[Cygnus X1]

I'm the only one who prefers to have dedicated outputs instead of the switch?

I do that but more than once I have found users using multiple taps even with the warning not to!

[roberto]

Worst episode ever:
an user of a rehersal room comes to me complaining of the clean channel of one of my amps. I ask him to show me his setup to solve the problem.

He connected the cab to the 8 Ohm tap (instead of 16) and the footswitch to the 4 ohm tap.