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Plastic top hat knobs stuck

Discussion in 'Hardware, Setup & Repair [BG]' started by NOVAX, Apr 2, 2009.

  1. NOVAX


    Feb 7, 2009
    ...to knurled shaft potentiometers. They are brand new. I fit
    them, they were real tight. Like a fool I jammed them on anyway.
    Now, none of them want to budge with my finger pressure. Does
    anyone have any suggestions? In lieu of buying the $40 StewMac
    knob puller, or crushing the plastic off with a pair of pliers.:(
  2. You might try sliding a credit card under the knob, then slip a knife between the card & knob and gently pry at it, a bit at a time. Take your time.
  3. 202dy

    202dy Supporting Member

    Sep 26, 2006
    Screwdrivers are inserted opposite one another on both sides of the shaft. Pull up on both screwdrivers at the same time. Knob will pop off. The idea is to apply the force parallel to the shaft. Prying on one side shifts the vector off parallel, making it harder to pull the knob.

    If you are worried about scratches you can use Popsicle sticks.
  4. NOVAX


    Feb 7, 2009
    You guys are incredible, thanks. I'll try again
    after I calm down and have a relaxed go at it.
  5. I use a fork where the middle prongs are missing, the curve makes a good fulcrum
  6. XylemBassGuitar

    XylemBassGuitar Supporting Member Commercial User

    Aug 14, 2008
    Durango, CO
    Owner and Operator, Xylem Handmade Basses and Guitars
    You can also use heavy twine. Wrap the center of a piece under the knob a couple of times then pull on the ends of the twine. This way you don't have any chance of scratching the bass.

    Careful, you might need to hold down the bass while you pull.

    A little off topic here but...joeyl, I'm pretty sure yours is my favorite avatar, it makes me chuckle every time I see it.
  7. NOVAX


    Feb 7, 2009
    :D:D:DThat is totally the ticket! Worked like a charm, after a
    couple of tugs. No mars, no scratches, no errors.:hyper:
  8. NOVAX


    Feb 7, 2009
    Totally solid idea and probably a good choice if ones hand+eye
    coordination isnt tight. Thanks for the input.:cool:
  9. haha thanks, I got it from the french bass forum, it was titled "Chat Volant" which means flying cat.
  10. :D

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