Drilling the Wiring Channel
|Drilling the wiring channel is a
scary, scary event. I've seen the the bit pop out of the back of the guitar body,
irrevocably ruining a nice piece of wood.
Check out this rig...using a drill guide from Woodcraft.com, I rigged a pretty good solution. the guide is a plastic case that holds bearings corresponding to the diameter of particular drill bits. For this example I used the 1/4" bearing.
I clamped the body to the workbench, and determined the "track" that the long bit had to take to drill the wiring channel using a piece of fishing line. This included the total depth required. Once marked, I aligned the drill guide using scraps of wood and clamps. I drilled a pilot hole with a regular brad-point 1/4" drill bit, and continued to check how level the drill guide and table were with "bubble levels" from Sears. Once the pilot hole was ready, I switched to the long drill bit and started drilling.
I lubricated the drill bits with some beeswax, and they seemed to do fine.