I usually twist and solder all the grounds to each other, and to a single extra wire that goes to one point. Beats trying to solder multiple wires to the same point (and having them pop off when the glob gets hot).
Wrap the glob in tape to protect it.
But yeah, best bet is a screw-on terminal strip. Even a simple piece of brass or copper shim stock mounted to the cavity would work. It's highly conductive and easily mounted. Still involves soldering, though.
Now, if you could figure out a way to mount a spring-clamp terminal strip to a pot's shaft, so that it is held in place by the pot and sticks out to the safe side (away from any other contact points), you might have something.
Maybe even a disc or half-moon setup that has a hole in the center where the pot would mount and hold it in place, with pre-connected terminals sticking out around the back or side of the pot. Using spring-loaded clamps, you insert the ground wires from as many sources as you have. Might still need to solder a ground wire to the trem's spring claw, but at most, that's all.
Should also be small enough to work in cramped control cavities.
Wrap the glob in tape to protect it.
But yeah, best bet is a screw-on terminal strip. Even a simple piece of brass or copper shim stock mounted to the cavity would work. It's highly conductive and easily mounted. Still involves soldering, though.
Now, if you could figure out a way to mount a spring-clamp terminal strip to a pot's shaft, so that it is held in place by the pot and sticks out to the safe side (away from any other contact points), you might have something.
Maybe even a disc or half-moon setup that has a hole in the center where the pot would mount and hold it in place, with pre-connected terminals sticking out around the back or side of the pot. Using spring-loaded clamps, you insert the ground wires from as many sources as you have. Might still need to solder a ground wire to the trem's spring claw, but at most, that's all.
Should also be small enough to work in cramped control cavities.
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