General tech questions

Help removing vol/tone knobs

1

I bought a hollowbody that has apparently spent the last nineteen years in it's case. Everything is great with it, but the volume & tone pots are loose and I can't budge the set screws holding the top hat knobs on. I'm wondering what I should use to try and free up the screws. I will be careful but still want to make sure what I use won't be bad for the poly finish - just in case.

2

Try sitting the Guitar with both set screw holes turned and facing UP by propping the guitar up on its side with a towel between the knobs and finish. Then put in a few drops of “liquid wrench” in the hole and let it sit at least overnight with them both facing up so it can penetrate.Then slowly try to remove them. I also keep a big variety of small screwdrivers on hand with different size heads ..... You don’t want to strip that head so make sure you have a good bite on it before you torque it. Best of luck, that usually works

3

Thanks - I'll pick up some liquid wrench tomorrow and give it a try. I already have the small screwdriver set.

4

Make sure you don't strip the hex or straight ends of them... then it gets worse. Be patient.

5

19 years? Might not be poly. Still, protect the body.

All good advice. You also want to be careful pulling the knobs off once the set screws are loose.

6

Sometimes tightening the screws breaks them free so you can loosen them.

7

I appreciate the help. I'll let you know how it works out.

8

Make sure your screwdrivers have parallel faces at the end. The ones with replaceable tips are often like this. The basic screwdriver is wedge-shaped at the end and is a flawed design that actually wedges the tool out of the slot when you apply torque. Careful heating of the grub screw with a soldering iron usually does it.

9

Thanks to all - Liquid Wrench & parallel face screwdriver did the trick. One of the four was actually a push-on that was also stuck. Patient leveraging with a soup spoon on thick cardboard eventually pulled that one loose.

10

Thanks to all - Liquid Wrench & parallel face screwdriver did the trick. One of the four was actually a push-on that was also stuck. Patient leveraging with a soup spoon on thick cardboard eventually pulled that one loose.

– dlaf_2

For future use, a couple other things that have worked in the past for non-set screw knobs are twine/fishing line wrapped underneath the knob, and (courtesy of a Ross pedal guy) bent paper clips to hook under the knob.

11

I'll remember those - thanks.


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