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Trizza

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Joined
14 Oct 2009
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Location
Finland
Another forum is holding a $100 instrument building competition, so I thought I'd give it a go! I figured you lot would be interested to follow this, so I'm posting here about it as well.

My build is being done entirely with hand tools, on my balcony.
Its going to be a 25" scale 7 string electric.

The plan - this is what happened when I stuck a picture of a Breedlove CM acoustic and a Rickenbacker bass into a bag and shook it for a while:
plan.jpg


I milled & prepped the neck blank from maple:
IMG_20100911_144603.jpg


Then I marked out and cut the headstock scarf joint - here I am establishing an accurate kerf. After getting in a good 5mm or so I shifted to a more normal ripping position and cut through:
IMG_20100911_151307.jpg


A few swipes of the No.6 (Quangsheng - an excellent plane!) cleaned up the face of the headstock:
IMG_20100911_153108.jpg


Plowing the truss rod slot took no time with my Record No.43:
IMG_20100911_171247.jpg
 
Now that does look interesting! I'm not a guitar player or builder, but whenever I've strayed over to look at any builds they've all been done in something like Norm's workshop, with never a hand tool in site.

This could be inspirational!
 
Right you are Ironballs. I slapped together something crude last year as a first attempt but this year I'm aiming a bit higher :)
 
Good to see another mimfer here - I built one for the $100 tele contest last year, it was great fun banging out something quick and dirty!
 
For most of the body I'm using cheap heat treated alder made for saunas. Here's the stock I'm using, I picked these pieces for their interesting grain (for alder, that is):
IMG_20100916_184628-1.jpg


I set my No. 6 for a coarse cut and hogged off the radiused edge:
IMG_20100916_190753.jpg


Then jointed both faces of each joint simultaneously for a perfect fit:
IMG_20100916_193434.jpg
 
Kitchen table glue-up proceeded to plan:
IMG_20100917_010147.jpg


Its a bit skimpy on the clamps, but the joint is so tight anyway that they're only there to hold everything in place. Surface tension from the glue was holding them together effectively.
 
Today I resawed the maple for the body cap:

IMG_20100917_182008.jpg


Initially I wanted to just bookmatch two slices of the 15cm-wide maple, however there seems to be some serious tension in this board. The slice took on a serious cup after resawing, so I ripped it down the center to save wood. I cut the rest of the top similarly, planed them all to about 1/2" thick and played around with arrangements to find a nice look:

IMG_20100918_212326.jpg


Theres something magic about a really sharp and waxed plane gliding off nice ribbons of wood, revealing hints of figure underneath. As you can just make out in the picture the wood is very lightly curly, hopefully I can emphasize this with the finish! Tomorrow I'll match joint the edges and get the glue-up proceeding.
 
This week's progress: Glued up the maple cap, flattened both sides of the cap and the body blank. Good exercise ;)

Top cap glue-up:
IMG_20100924_002314.jpg


I'm getting some gnarly tear-out on the maple so I'll have to hone my scraper skills a bit I think!
I'll have to add a Krenov-style high angle smoother to my project list I guess ;)
 
First there was some gluing:

IMG_20100925_153131-1.jpg


Then there was some jigsawing (jigsaw and drill will be the only electrons burned in this build):
IMG_20101002_111311-1.jpg


A coping saw works nicely for the tighter curves:
IMG_20101002_112124.jpg


Rasps and surforms are great fun to use - here I'm starting the belly carve:
IMG_20101002_121836.jpg


Here is the belly carve fully rasped, before starting any sanding. Yep, those are some dents in the back - I've got some work ahead of me eliminating those.
IMG_20101002_122610.jpg
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Next I moved onto the neck & pickup pockets. I wasted away most of the wood with drills:
IMG_20101002_155815.jpg


Then finished them off with chisels. Here's a mockup of how it might look:

IMG_20101002_163057.jpg
 
I used a 20mm Forstner bit to drill the hole for the jack:
IMG_20101002_165013.jpg


Followed that up with a super long 1/4" bit to give me somewhere to run my wires:
IMG_20101002_165541.jpg


I marked a line showing the path of the drill:
IMG_20101002_165930.jpg


Then I cross-drilled straight through the body with a 3mm bit at the position where I wanted the volume knob. This showed me where to drill & chisel the control cavity pocket from the rear.
 
It's coming up nicely, Trizza! 8)

Btw... My god I hate those Biltema's clamps. They are so badly made. Last couple of weeks I have broke three of them, even without too much pressure or other abuse... :lol:
 
Yeah, I'm just waiting for the day mine die. The price was right, though..

Where are you located? I don't know too many local woodworkers. I'm still learning Finnish so I haven't really dug into the local forums yet.
 
Trizza":2eesbmkx said:
Yeah, I'm just waiting for the day mine die. The price was right, though..

Where are you located? I don't know too many local woodworkers. I'm still learning Finnish so I haven't really dug into the local forums yet.

Price was good, that's why I bought half dozen of those. Handle's pressure mechanism will fail very easily. I have repaired few of them replacing plastic handle "hinge" with steel bolt... :wink:

I'm located in northern Finland, just outside of Oulu.

Biggest (and maybe best) Finnish forum is kotiverstas.com.
 
Next up was the neck glue-up. The truss-rod here is made from 12mm*10mm aluminium channel, 6mm threaded rod, a washer, a 6mm furniture joining nut thingy (barrel nut?) a spacer nut, an M6 bolt, and some irrigation tubing. I first masked off everywhere I didn't want the epoxy to go:

IMG_20101005_000222.jpg


Then I slopped some 5 minute epoxy around and clamped the truss rod in real tight with some scrap as a caul:

IMG_20101005_001853-1.jpg


I then glued on the maple fretboard blank (cut from the same stock as the neck) - I forgot to take any pictures of this step.

Once that was all good and dry I radiused the fretboard to 15" using a plane:
IMG_20101006_184048-1.jpg


Then I flipped the neck over and planed in the taper to each side:
IMG_20101006_185643-1.jpg
 
I marked out the fret locations by printing off a fret chart and taping a rule to the centerline of the neck. I made little cuts with a knife at each location and filled the cuts with graphite so they'd stand out better:
IMG_20101006_220201.jpg


I planed a matching taper into some scrap pine so that I could wedge the neck square in my miter box, where I slotted it with a fine cut blade in a coping saw
IMG_20101006_232021-1.jpg


Next up I measured the thickness at the 1st and 12th frets of my favourite guitar neck and rasped the new neck to thickness at those points. Then I used my Mujingfang spokeshave to shape the basic neck profile (yet to be sanded):
IMG_20101007_020804-1.jpg


Then on went the headstock ears:
IMG_20101007_030807.jpg
 
This evening I first flattened & thicknessed the headstock (again by hand), and cut the shape with a coping saw:
IMG_20101007_182355-1.jpg


Then I set about tackling the tearout on the maple top. I decided to try my block plane out on this, so I honed the iron a bit and tightened the mouth up real close and the results were great - peeling off fluffy shavings without tearout no matter which direction I planed. With just haphazard planing only intended to work out the severe tearout I achieved a surface good enough to see the plane's reflection:
IMG_20101007_193244.jpg


The alder back planed even easier, giving me wonderfully fluffy shavings:
IMG_20101007_194452.jpg


Boy am I glad the block plane performed so well on that tearout - I was dreading the amount of sanding I'd have to do!
 
This is looking great.

Radiusing a fretboard with a plane - much braver man than I :p
 
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