/diy/ - Do It Yourself

>>2767021
>I am cleaning an old potentiometer

that's not a potentiometer, nigger, it's a rotary switch.
you can clean the ring with an eraser.
as for the two arms, you shouldn't use an eraser coz you might end up bending them.
there are mechanical options, but they require skillz.
best bet is (1) do nothing, or (2) spray contact cleaner while rotating knob.