New batch II

I'm about halfway through the new batch.


All necks have been given their carbon fiber rod, the bottom and top have been thinned and the bottom ribs glued in. In the picture, all braces and plates for the tops have been cut to size and shaped.

My collapsible go-bar jig is quickly screwed together for gluing the braces and plates, the table is part of the jig. The roof of the jig was first made with just one wooden board, then two, and finally it got additional reinforcement on top in the form of a framework. The pressure from all the go-bar rods is not to be trifled with! It works very well. The rubber-coated radius plate under the guitar has the same radius as the top and the braces.

All the braces and plates to be glued using matching cauls and bent go-bar rods. Special cauls for all the different braces and plates have been manufactured.

The gluing is done in two or three passes. The Go-bar rods with red markings are a few mm longer than the unmarked ones. The rods are made of 8 mm round birch rods that have been flattened on two sides to a suitable stiffness. The heat gun is always used to heat both the brace/plate and the top before each gluing with hot hide glue.

Here, all the braces and plates are glued, except for the brace under the fingerboard. That brace can later be given a different radius and give a different shape to the top under the fingerboard to avoid the need for a wedge to get a straight fingerboard. That brace is also rectangular in cross-section and made of pine instead of spruce. All to make the brace stronger so that it can withstand the string pull. Everything above the sound hole is there to make the guitar durable, the sound comes almost exclusively from the top below the sound hole.

2 Comments

  1. One of the above batches is GG224, made in Nässjö around 1920. I got it back today – Wow what a result!! The K&K mic turned out great. Very good job, well worth the wait – thanks Roger!

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