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Drilling an instrument and installing the Jack

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We recommend that you hire a luthier to drill your instrument.

However, if you want to do it yourself, if you are a handyman and have a bit of gear, then here are some tips.

Necessary material :

  • Variable speed drill
  • 3 mm drill
  • Step drill from 3 to 12mm
  • A round file to adjust the diameter of the hole if necessary.
  • Adhesive paper

Instrument drilling:

  • We recommend that you put paper tape at the location of the hole to avoid splinters of wood around the hole.
  • Once the location has been determined and marked, use a 3mm drill to make a pilot hole which will then guide the drilling to 12mm. Be careful to drill this first hole straight in the axis of the instrument.
  • Then drill the hole to 12mm using the step drill which allows progressive drilling in complete safety. Remove the paper tape.
  • Unscrew the belt attachment cover from the Jack, unscrew and remove the nut and washer present at the end of the jack
  • Check that the Jack passes freely through the hole you just drilled. If not, lightly file the hole with the round file.
  • Insert the Jack from inside the instrument. The part of Jack with the larger diameter should be slightly set back from the outer edge of the instrument, 2 to 3 mm. To do this, adjust the nut located on the rear part of the jack.
  • Once the inner nut has been adjusted, you can put the washer and then the outer nut in place and tighten it with a 12 wrench. To prevent the Jack does not turn, you must insert a small screwdriver in the hole provided for this purpose, you can then tighten the nut completely.
  • Once the tightening is done, the Jack should not rotate. The outer bolt must be almost completely screwed in to allow the hubcap to then be completely screwed in as well, otherwise it could prevent the jack from inserting completely.
  • Put the hubcap back in place and tighten it by hand. There you go, it's over.

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