3 piece back measurements?

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jread
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Re: 3 piece back measurements?

Post by jread »

BlindBo wrote: Sat Mar 09, 2024 10:55 pm This is my old D-35 back:
IMG_0015.jpeg
Hey thanks for that note. yeah, I agree, I didn't mean to lay it out that way, it was just a rough view of how all 3 look together. I plan to do it the same way you describe and how d35's are set with the neck heel end just like in your photo. That's a beauty by the way. I also plan to use black/white/black purfling like that.
tippie53
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Re: 3 piece back measurements?

Post by tippie53 »

the back wedges were 6 in wide at the bottom and aps 1 1/4 at the top. that varies a little but not too much. They did this to use up the narrower brw they had . by 69 BRW was pretty much done at Martin on production instruments. Every now and then one pops up but this allowed them to use the stockpile up.

.
John Hall
Blues Creek Guitars Inc
Authorized CF Martin Repair Center
president of Association of Stringed Instrument Artisans
http://www.bluescreekguitars.com
jread
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Re: 3 piece back measurements?

Post by jread »

Looking pretty good. My drum sander has only about 10" of workable area so glued on the maple/rosewood/maple binding to the middle piece then sanded 3 separate sections down about .117". These plates aren't even glued together yet. I'm considering replacing the strips as the outside maple piece got a little narrow at the bottom end but eh, it might be ok. Wouldn't be hard to re-do them however. Now that the plates are sanded, it might be easier, more accurate to just to glue them in then use a hand plane and sander to bring them flush. Ok, talked myself into it. That narrow maple strip is bugging me.

The back looks a lot better to me than just the 2 book-matched plates so I'm very happy with this start.
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Kevin Sjostrand
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Re: 3 piece back measurements?

Post by Kevin Sjostrand »

Beautiful!!
jread
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Re: 3 piece back measurements?

Post by jread »

Ok. All glued up. Replaced strips. 4 7/8” at base. Houston, we have a back. Calling it good ready to move on. Thanks for letting me share and process thru the new trick.

Just wiped with naphtha.
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banjopicks
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Re: 3 piece back measurements?

Post by banjopicks »

That looks really good.

I plan on doing something similar after finishing my current guitars. I have a piece of rosewood that is only 7" wide and some Brazilian that is 3" wide. I might double the Braz to get these dimensions.
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