Size 2 Martin build coming late October

Guitars by Grant Goltz of Hackensack, MN
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Dennis Mitchell
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Re: Size 2 Martin build coming late October

Post by Dennis Mitchell » Thu Dec 02, 2010 11:26 pm

Like all the rest, thanks so much Grant! What a pleasure to watch and learn from a true craftsman. :clap: :mrgreen:
Dennis Mitchell

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whitespruce
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Re: Size 2 Martin build coming late October

Post by whitespruce » Fri Dec 31, 2010 7:31 pm

Well, I have been playing hookey again on this one. I did change the blade in my small bandsaw, so I can cut out a bending form and get on with the sides. And the humidity is down good so I can brace the top and back. Just gotta clean off my bench so I can actually have a place to do it :oops:

I did find a scrap of mahogany for the neck. Gonna do one of those V joint pegheads cuz that is what is on the original. Plenty of examples here with Waddy and Arnt's builds, so I lots to go by, Gonna do a dovetail neck, too cuz that is what is on the original. Man, all that and an X braced top, too :shock: Gonna set me back 10 years.

I will have some photos in a few days.

G

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Kim
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Re: Size 2 Martin build coming late October

Post by Kim » Fri Dec 31, 2010 8:47 pm

Great build thanks Grant, will be following this one with much interest.
Cheers

Kim

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Matt Shumway
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Re: Size 2 Martin build coming late October

Post by Matt Shumway » Fri Dec 31, 2010 9:58 pm

When I see the title to this thread my mind reads "Steve Martin coming in October" :lol:
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whitespruce
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Re: Size 2 Martin build coming late October

Post by whitespruce » Sat Jan 01, 2011 9:21 pm

Well I took some time while the shop was warming up today to work on the neck. As I mentioned, this will be a V joint peghead, just like the original 1890 Martin that I am replicating has.

One nice thing about this style of neck is that I can use shorter "scraps" of mahogany that are too small for a regular neck. Only needed a 16" long piece for the neck shaft.

So I cut a blank and drew out the neck
Image

Then I bandsawed it out
Image
I was able to pick out a perfectly quartersawn offcut for this neck

Then I measured for the neck shaft length and made some side cuts to demark off the dovetail section and the "V" stub that the peghead will fit onto.
Image
These will be cut to full depth by hand later in the process.

Since I am only making one neck, I did not go to the trouble of making any fancy jigs. I just set the table saw blade to 12 1/2 degrees and screwed a piece of plywood onto the miter guage and "went at it". First I did a test cut on some scrap...just in case
Image
Looks fine...the rest will be cut by hand

So here is the setup
Image
I set the rip fence to get the cut at the correct distance from the edge of the blank. Then I clamp the neck blank perfectly vertical and make the cut..

...Then turn the blank with the other edge to the rip fence and make the second cut
Image
Like I said, the rest of the cut will be finished by hand and everything cleaned up

I cut the peghead out of another piece of mahogany "scrap". It is 5/8" thick and about 3" wide (for now), and 7" long. The end that will fit to the neck shaft is squared off at a 15 degree angle, the angle of the peghead to the neck. I left the table saw set up the same. Used an offcut from cutting the peghead from a 1-piece neck as a spacer..it already is cut to the 15 degree angle. To make the first cut of the "V" I used the spacer block to angle the peghead blank 15 degrees back
Image

Then I flipped the spacer block to tilt the peghead 15 degrees forward and made the second cut
Image
Actually, I had made the cuts before these 2 photos, and I had just shifted the rip fence over a tad to recut and widen the "V". Then all I had to do is cut out the very tip of the "V" with a knife and clean it up with a knife edge file

So here are the parts all cut
Image
Only needed a slight bit of trimming (mostly used a small sanding block) to get a perfect fit

Here it is dry fit
Image

I used thickened marine epoxy tinted brown to glue it up
Image

So there it is. Just let the epoxy cure and clean it up. Now to be honest, I was kinda dreading the prospect of making this joint cuz I thought it would be one of those finikey things. But truth is that it went real easy and seemed to come out perfect. I might even do this on a regular basis :D

But I do owe a big thanks to Waddy and Arnt for showing the process and making it easy to understand. Without that, I might not have gotten up the nerve :?

G

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Dennis Leahy
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Re: Size 2 Martin build coming late October

Post by Dennis Leahy » Sat Jan 01, 2011 9:32 pm

Cool! Yet another way to skin that kitty.

Silica: just to thicken the epoxy so it won't run, or to make the epoxy work as a gap filler?

Dennis
p.s. Damn! It was cold today!
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whitespruce
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Re: Size 2 Martin build coming late October

Post by whitespruce » Sat Jan 01, 2011 9:36 pm

Dennis Leahy wrote:Cool! Yet another way to skin that kitty.

Silica: just to thicken the epoxy so it won't run, or to make the epoxy work as a gap filler?

Dennis
p.s. Damn! It was cold today!
The silica is to thicken the epoxy so it spreads like a glue rather than just soak into the wood. One of the many additives used to make thin runny epoxy into just about anything you want :D
Yes, cold today and colder tomorrow :shock:

G

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Rod True
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Re: Size 2 Martin build coming late October

Post by Rod True » Sun Jan 02, 2011 1:16 pm

Looking great Grant! I really like that rosette.
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