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Turning a Harley benton PB-Shorty into a JB-Shorty.

Discussion in 'Luthier's Corner' started by blablas, Jan 20, 2015.

  1. GKon

    GKon Supporting Member, Boom-Chicka-Boom

    Feb 17, 2013
    Queens, NY
    VERY nice work, Blasblas!!!!

    Can I ask, how do you cut out and shape the pickguard? What tool(s) do you use?
  2. No tools that are available for home use.;)
    I make use of machines and tools I also work with for my daytime job, first I make a drawing of the outline in AutoCAD and then use a laser engraving machine to cut out this outline from the rough pickguard plate, for the chamfered edge I use a edge breaking router.
    GKon likes this.
  3. GKon

    GKon Supporting Member, Boom-Chicka-Boom

    Feb 17, 2013
    Queens, NY
    Sounds great and looks great. But, seems I will have to find another way to do mine ;)
  4. Toban.Ivan


    Sep 2, 2010
    There's alwais a solution ;)


    Application: Single coil P-Bass®
    Price: xxxxxxxxxxxxx
    DC: 28.3K
    Magnet: Alnico 5
    Spacing: E-to-G 2.120"
    Lead wire: Four-conductor
    Wax potting: Included
    Logo: Optional
    Color: Black
    Cover: N/A
    Notes: Drop in hum-canceling pickup for '50s style single coil P-Bass®. Note: because
    this is a Stack, make sure you guitar's pickup cavity has at least .81' clearance

    Not for free for sure but life changing if talking about hum.

    Besides, with a wonderful triplet on the way.. Why not a poker? ;)
  5. Nice!

    I did something similar to one of those too...
    Added a J pickup, drilled a new output jack, made it Master volume - Balance - Tone, made the strings go through-body, and a complete new paintjob on the body.
    Very nice and easy to play these short scale basses. :)
  6. Hopkins

    Hopkins Supporting Member Commercial User

    Nov 17, 2010
    Houston Tx
    Owner/Builder @Hopkins Guitars
    I imagine the output of that pickup is rather low. Stacked single coils are low output already because the bottom coil leaches output while it cancels hum, and the small physical size of that pickup means it has less windings per coil.
  7. Made the new pickguard today, looks ugly due to the protective foil that's still on.
    GKon and TitaniumRx like this.
  8. Routed the cavity for the pickup.

    And battery box.
  9. Temporary attached all the components to check if everything fits inside the cavity and how the string align over the pickup pole-pieces.
    Looks good, next step is shielding and sorting out the wiring.
    GKon likes this.
  10. GKon

    GKon Supporting Member, Boom-Chicka-Boom

    Feb 17, 2013
    Queens, NY
    Very nice!
  11. Body shielding.

    And after:
    Used materials - Copper tape and graphite paint.
    GKon likes this.
  12. More shielding.
  13. Finished wiring and everything works properly.


    All that needs to be done now is doing a proper setup and after that have fun with it.

    More detailed pictures when lighting conditions are better.
  14. GKon

    GKon Supporting Member, Boom-Chicka-Boom

    Feb 17, 2013
    Queens, NY
    Great job!
  15. Sem Thewissen

    Sem Thewissen

    Aug 18, 2011
    @blablas The preamp you used, did it contain an active/passive or on/off switch or jack? Or did you need to buy this separately?
  16. aussietc


    Apr 14, 2010
    Nice work!!
    Do you have any sound clips or videos of how these shorties sound?
  17. no active/passive or on/off switch and also no jack.

    No sound or movie clips (for now), it takes me more effort to make a decent recording than to build a complete bass from scratch.
  18. Sem Thewissen

    Sem Thewissen

    Aug 18, 2011
    So did you add an extra switch of some sort to preserve battery life?
  19. The switch is for switching the pickup in series or parallel mode.
  20. Detail shots.


    Exchanged the black pickguard screws for chrome ones for a nicer visual contrast.

    The triplets together will follow at a later time. :)

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