Multiscale Bass Build

SlingBlader

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Hello everyone. It's been a little while since I've posted a build thread, so here we go. :)

I've been wanting to try my hand at building a multiscale instrument for a while, so a few weeks back I put pencil to paper and starting to draw something up. Most of the basic geometry will be based on Dingwall specs. They already have this stuff figured out, so why try to reinvent the wheel on my first attempt?

Some basic starting points and specs:
  • 4 Strings
  • Bolt on neck, 21 frets
  • 36.26-34" scale lengths
  • Multi-lam neck (maple, mahogany and bloodwood)
  • Poplar body with figured maple top
  • Tapered or possibly carved body wings
  • Most likely a trans white finish on the top and solid white on the rear of the body
  • Bound body and neck (think reverse LP custom binding)
  • 2 Lace bass bar pickups with coil split switches
  • Audere 4 band active preamp

I want the body style to be in the Gibson reverse Thunderbird, RD or Explorer vein stylistically, but I know those are very prone to neck dive. I also didn't want to do an exact copy, just pull some of the lines from those models and put my own twist on it.

So, I drew out the neck and scale dimensions, then I started in on the body shape. I began with an outline of the RD body shape. Please excuse the shadow. :D
PVFOWQL.jpg


I overlaid this with additional pieces of paper to modify different sections at a time. Anyway, this is where I landed:
Ts63TOk.jpg


I would normally do a 24 fret neck, but 21 frets seemed to make more sense. I was able to connect upper bout at the 14th fret, which should help with neck dive issues, but who knows?

Oh, I should also mention, this will be my first time jumping into using automotive urethanes for the finish. I have a decent amount of experience with nitro, but very little with auto paints. I've purchased a better exhaust fan and am looking at a little bit better spray "booth" situation. The driving force for me is to be able to wrap up shooting in 1 to 2 days and start leveling/polishing a couple days after that rather than the usual 3-4 week wait.

Anyway, let me know what you think of the body design and build plan. I'll post some progress shots as I get going. :thumb:
 

SlingBlader

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Well, I got things rolling on this project and knocked out a couple of items on the check list.

I got templates for the body and headstock completed using some 1/4" sheeting that I had leftover from a flooring project. Upcycling!
1uryoZ1.jpg


I cut a couple of chunks of poplar for the body.
XZ1EqHB.jpg


I trimmed those down to size, jointed the glue seam and got it clamped up.
qEjYYYk.jpg


Flattened and cleaned up the body blank on the drum sander.
Jomm4NT.jpg


Marked the body outline on the blank ready to be cut out.
sw9fkWY.jpg


More soon.
 

SlingBlader

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Well I made a little progress on this project. I prepped up the neck laminates, which consist of hard maple, mahogany, bloodwood and black-dyed poplar veneer. I rough cut those on the band saw, then finished them on the drum sander.

Clamping fixture at the ready, glue is mixed and ready for glue-up. The clamping cauls that I made are tapered, so that I can glue up tapered neck blanks, but will still clamp "squarely". For this particular glue-up, I've flipped one of the cauls so that the angles offset and make a set of square cauls.
uScqozX.jpg


All 13 pieces (7 primary laminates + 6 pieces of poplar veneer) are glued and clamped with UF glue. That will sit for a few days before I touch it.
3NV1wyH.jpg


While I had the band saw out, I cut up a nice chunk of black and white ebony. One of those will become the fretboard for this build.
gN946vN.jpg


More soon. :)
 

Skyjerk

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sweet jig.

I can watch everything except when you install frets, so ill be following closely till then :)
 

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