Here’s the last shot of the sound board, after squeezing the rosettes in:
Time to make the bridges. First thing is to determine the space between holes. This is usually the most frustrating part of the whole deal. But this time it was a cinch, so maybe my frontal lobe has developed some since I last made one of these. 😉
This time, I stretched a thread between the pins, at the top and bottom of the blocks, then measured the distance between them, at the position and angle where the bridge will be. Then divide that number by the number of spaces between courses. So, for the treble side, it was 19.125″, divided by 17, = 1.125″.
So, having got that figured out, it’s time to process the wood. I used curly maple for the bridges. First cut it out of the parent board, then joint the edges, and plane to 5/8″ thick. I’m making these 1-1/8″ tall.
Now the table saw is used to make a V shaped groove on the top:
Then the holes are layed out:
and drilled. I used a 3/4″ forstner bit. I also marked where I’ll be cutting notches:
The notches cut and the bridges set in place:
Here’s how the cross section of the bridges ended up:
I’m using 3/16″ diameter music wire set on top of the braces, to support the bridges. I was worried they wouldn’t be strong enough to support it, so I added some braces in between the others:
Now it’s time to make the strips of wood that hold the saddles. They’re made pretty much like the bridges, except they’re only 1/4″ tall:
Now it’s time to drill out the tuning pin holes:
I made this tool for driving the pins in. It keeps them from going in too far.
The hitch pins:
Making a carrying handle:
The hole to the left of the handle is for the pickup jack.
To be continued… again…