1. Don't cut your fingers off.
2. Don't screw it up. (My cleaned up version. He was more blunt.)
Simple enough. We will see how well I do with them.
Tonight was about making sticks. I took 3 pieces Sitka brace stock and measured, cut, planed and sanded them until I had about 10 braces to be used on the top and back. Ken taught me how to measure properly so you arrive at your final size. Basically, if you want a 1/2 brace, you measure and cut a 9/16 brace so you have room for sanding and planing. I know this seems like a no-brainer, but if you aren't familiar with this stuff, this little detail saves you a lot of ruined sticks and wasted wood.
They obviously aren't finished, but they have their basic size. The smallest is about .070 thick and the largest is just under 3/4 inch. Its also important to have the grain going the right direction. It needs to run top to bottom, not side to side. From here they will be cut to length and glued to the top and bottom. Once in place they will be carved to their final shape. The goal is to have a very light and strong brace that allows the top to vibrate as freely as possible without caving in or distorting. The scalloping also has a significant effect on the final sound, although I don't know exactly how yet. What you see here is about two and a half hours work. Seems like a lot but I was taking my time so as not to break Rule 2.
We also worked on the back. Ken showed me how to bookmatch the grain, which is basically lining up the two halves to get the grain to match each other. Once this is done you stack the 2 pieces one on top of the other and tape them together. Then its off to the joiner to shave off the edges so they fit together with no light showing between them. The joiner is set for the lightest possible cut, but it still takes only about 3 passes and you're done. Actually, the joiner only gets you close. Holding the two halves together up to a light shows there is still some work needed. I used a 16 "fret leveler with sandpaper glued to one side to do the final matching. All of this was much easier than it sounds and expected and only took about a half hour.
What you see here is the back after it has been glued. Clamps on the right and left hold it in place. Notice the dark shims on the left. These are used to apply pressure to force the halves tightly together. The top clamps are obviously holding them down. This will sit and cure for the coming week. It probably doesn't need that long, but I won't be back before next week anyway.
All in all, I think it was a successful week. Ken was happy because neither Rule 1 or Rule 2 was broken.
P.S. While we were there Ken showed us a 1942 Martin 000 he is working for a friend. Spruce top and Brazilian Rosewood back and sides. In spite of its rough look, its considered to be in good condition and the market value is about $10K. This is because of the rosewood. The equivalent guitar with mahogany would be around $2-3K.
See ya next week...