Tag Archives: guitar making

Guitar #29/2

Guitar mold - day 3

Guitar mold – day 3

The order for my wood is being processed. I buy the wood from a dealer here in BC, and they sand it to my specs. I used to have to sand it myself, which required having a wood shop do it, or a friend. Now I get it done for me, which saves a huge amount of time. They only charged me half an hour labour.
I spent a long time sawing the outer edges of the mold today. My tiny band saw is not made to cut through 3″ thick plywood. But it did, painfully slowly. I sanded it all up and put the halves together. They didn’t mate perfectly, of course, so I sanded the mating surfaces. Then they were a bit short so I added a thin piece of spruce to each end to make up the loss. They were still not mating perfectly, so this time I did what I should have done first – I got out the JB Weld.
I separated the halves with a little waxed paper, and applied a gob of epoxy to the mating surface ends of one half. Then I gently pushed them together, with the whole thing flat on a table. I bought draw catches to clamp the halves together and I will put dowels in to ensure they register properly. Document (35) (2)

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Guitar #29/1

Martin O15

I’m building a guitar for a friend. It will be based on a Martin O-15. It’s small, about the smallest full size guitar Martin ever made, but it has a great sound. The 15 series were all mahogany, and had minimal trim.
The one I’m going to build will be made of walnut, with a cedar top. It will not be a flat top, but will have an arch. This will require a tailpiece and a floating bridge. Martin made some like this around 1932, the R model, but they were short lived.
So far I’ve traced the body shape of an O-15 I borrowed, and made a paper half template. From that I traced a full size body outline on Bristol board. Next I drew in where my braces and the sound hole will go. Then I made a body mold from 8 pieces of 9x22x¾” plywood. This involves band saw cutting, drum sanding, and finally routing the seven rough sawn shapes using the master as a router template.

Body plan and half template of bristol board

Body plan and half template of bristol board

Body mold glue up

Body mold glue up

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