00 Sitka / Hawaiian Koa falcate steel string.

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John Parchem
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Joined: Fri Dec 23, 2011 8:33 pm
Location: Seattle
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Re: 00 Sitka / Hawaiian Koa falcate steel string.

Post by John Parchem » Sun Nov 03, 2024 1:01 am

This is going to be a bolt on bolt off neck. Before routing for the neck extension pocket the neck set needs to be perfect, or life gets hard later in the build. So I can not describe the number of times I checked the next angle and the location of the 12 fret to the bridge. With a fret board placed correctly on the neck I also used strings to actually see the string paths to the bridge for the E strings.

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This neck joint is from the Gore/Gilet books. The idea is to route a pocket into the neck and a heel block extension in the guitar. The block extension is then glued only to the neck part of the pocket. The first pictures shows the routing jig and a test insert I made out of plywood on my cnc

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I double checked all of the setup angles once again and routed the pocket about .6" deep.

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Here is why I needed a test plug, I tried to account for the router guide but the plug was a bit big.

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I went back to the cad software took a thirty second off the plug and had the CNC route a mahogany plug.

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A much better fit, I left the plug a tad proud so I planed it match the neck.

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A nice fit!

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And for the first time I left off the wings I need on the head stock and kept most of the neck alone. This allowed me to take the neck back to my router table (still setup from earlier) and route the truss rod slot in the neck extension.

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Now I can start profiling and carving the neck.

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John Parchem
Posts: 2746
Joined: Fri Dec 23, 2011 8:33 pm
Location: Seattle
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Re: 00 Sitka / Hawaiian Koa falcate steel string.

Post by John Parchem » Sun Nov 03, 2024 3:39 pm

Finishing up the neck joint, I added the brass inserts to the neck extension and drilled the bolt holes in the heel block.

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Once again checking over all of the setup parameters, and getting ready to glue on the wings where I need a bit more width.

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Before gluing on the wings I can still rely on the square section of the neck to cut out the rough heel profile.

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While I am at it I trimmed the heel length.

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John Parchem
Posts: 2746
Joined: Fri Dec 23, 2011 8:33 pm
Location: Seattle
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Re: 00 Sitka / Hawaiian Koa falcate steel string.

Post by John Parchem » Sun Nov 10, 2024 8:48 pm

On to the neck. I have a little time each of the last few days so bit by bit I have been putting the neck together. First off I add a couple of small wings on the headstock.

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As the headstock was designed and cut out on my CNC so that I could use it to help shape the headstock. I mostly cut it out on my bandsaw and finished shaping with a pattern bit.

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Before gluing on the headstock veneer, I quadrable checked the fretboard relative to the scale length. I glued on the fret board without taking pictures.

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I used a drill the 10 mm holes required for the gotoh tuning machines

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I checked the thickness of the headstock; they were a bit thick at 15.5 mm as can be seen in the picture. I set up the safeT planer and took them down to around 14.5 mm. I like the safeT planer as I can keep the back in plane with the face.

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I glued on a heel cap and started to shape the heel and start the transition between the neck and headstock. I used a rasp for the heel and a knife for the headstock transition. I will finish the transitions after I shape the neck.

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peter havriluk
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Joined: Sun Jul 29, 2012 12:30 pm
Location: Granby, CT

Re: 00 Sitka / Hawaiian Koa falcate steel string.

Post by peter havriluk » Sun Nov 10, 2024 9:16 pm

Kitty (aka shop foreman) portrait please? There's precedent, Dave Bagwell shared Rosie with us. Thanks!

And oh yeah, the guitar is a treat to watch being built.
Peter Havriluk

Kevin in California
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Joined: Mon Dec 19, 2011 4:19 pm

Re: 00 Sitka / Hawaiian Koa falcate steel string.

Post by Kevin in California » Mon Nov 11, 2024 12:16 am

Coming along so nicely. That is a tall headstock, I like the shape.
Is this a new logo change I see?

John Parchem
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Joined: Fri Dec 23, 2011 8:33 pm
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Re: 00 Sitka / Hawaiian Koa falcate steel string.

Post by John Parchem » Mon Nov 11, 2024 11:07 am

Peter this is Sua our female Bengal, we just lost our male, her littermate.
sua.jpg
sua.jpg (234.45 KiB) Viewed 300 times
I miss our boy
rama and sua.jpg
rama and sua.jpg (194.39 KiB) Viewed 300 times
Kevin the inlay was customer supplied by my client. He wanted the logo, it is nice and the contemporary headstock. I did show him it fitting in a dove bar headstock. So I extended the headstock a bit.

Herman
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Location: Arnhem area, the Netherlands
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Re: 00 Sitka / Hawaiian Koa falcate steel string.

Post by Herman » Mon Nov 11, 2024 11:58 am

What beautiful cats. We had several cats in the past, but none at the moment. Looking at yours it is very tempting ..maybe.. who knows... ;)

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