The first task of setting up the guitar is to fit the wooden - TopicsExpress



          

The first task of setting up the guitar is to fit the wooden friction pegs. The mechanical device on the bench is a store bought peg shaver. The pegs may not be perfectly round when to get them so you have to shave them into a perfect tapered cylinder. That aluminum peg shaver is OK, but the ones I make by hand seem to work better. Shaving a peg is like sharpening a pencil, but it must 20 times more accurate. The peg fits into a tapered hole in the headstock, this is created with a tapering tool called a reamer. It has 30:1 taper. For every 30 mm in length the taper reduces by 1mm - A thirty to one ratio. The peg shaver I make is made with the reamer. A hole is drilled into a chunk of scrap wood and the reamer is used to enlarge the hole and taper it. Then the top of the block is planed off leaving the tapered hole exposed. I clamp a spare plane iron ( blade) to the block and it can now shave pegs. A few careful taps with a hammer and the blade is placed so it shaves the peg at the 30:1 taper. I try it out on a few pegs until I get it perfect then I shave a set of 6 or 7..... Then I use same tapered reamer to create tapered holes in the headstock of the guitar. Some fitting, some looking, more shaving more reaming and two hours or three later and the pegs are set. While setting the pegs I leave the ones I have already set it the head stock and use them to sight each peg in relation to the others. They have to be set parallel to each other and not be crooked in any direction. Pitch, roll and yaw need to be dead on. It means going slow, really slow as if you were drawing a super realistic pencil drawing. Once they are all set they get rubbed with white bar soap to lubricate them. Then they get shoved back into the hole and turned until the soap coats the walls of the tapered hole. Now the pegs slip too much. So the remedy is to rub them with powdered chalk and stick them back in. Now they are too sticky as the chalk acts like a friction brake. More soap, twist the peg lightly in steel wool, more chalk, more soap.....twist.....rinse repeat. After a while a surface of chalk and soap get built up that is just the right balance of slippy and sticky and the pegs are set.
Posted on: Mon, 25 Aug 2014 13:47:31 +0000

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