Tuner Hole Chip Out on Back of Headstock
Posted: Sat Jan 01, 2011 2:20 pm
When I drilled my tuner hole, I backed the headstock with scrap and everything worked perfectly.......no tear out and perfect holes.
I used zpoxy for the pore filler and some of it got into the tuner holes. So I thought maybe I should run a bit through the tuner holes to clean this out before spraying. I chose a standard tapered bit hoping it would center in the existing hole. I put the bit in a hand drill and turned it by hand (used the larger diameter of the chuck as leverage to turn the bit easier). Wouldn't you know it, it broke out a bit of the mahogany on the back side of the headstock, bummer.
So any thoughts on how to repair this? Also, how could I have cleared the tuner holes without creating this damage? FYI, right after I originally drilled the tuner holes, I used thin CA to seal the holes up and I hoped this would have helped prevent something like this happening......guess not. I wonder if it would have been better to run a bit through the holes to clear them after each zpoxy coat?
Now I need to ream the zpoxy from the larger holes on the headstock veneer side where the tuner bushings fit. I don't want tearout here. How should I do this? I have the StewMac bushing reamer......think it will tend to cause tearout as did the drill bit?
Edit: I just realized the tuners will likely cover this (thank goodness). The question on how to ream the bushing holes on the rosewood headstock veneer is something I would like to see discussed.
Thanks!
I used zpoxy for the pore filler and some of it got into the tuner holes. So I thought maybe I should run a bit through the tuner holes to clean this out before spraying. I chose a standard tapered bit hoping it would center in the existing hole. I put the bit in a hand drill and turned it by hand (used the larger diameter of the chuck as leverage to turn the bit easier). Wouldn't you know it, it broke out a bit of the mahogany on the back side of the headstock, bummer.
So any thoughts on how to repair this? Also, how could I have cleared the tuner holes without creating this damage? FYI, right after I originally drilled the tuner holes, I used thin CA to seal the holes up and I hoped this would have helped prevent something like this happening......guess not. I wonder if it would have been better to run a bit through the holes to clear them after each zpoxy coat?
Now I need to ream the zpoxy from the larger holes on the headstock veneer side where the tuner bushings fit. I don't want tearout here. How should I do this? I have the StewMac bushing reamer......think it will tend to cause tearout as did the drill bit?
Edit: I just realized the tuners will likely cover this (thank goodness). The question on how to ream the bushing holes on the rosewood headstock veneer is something I would like to see discussed.
Thanks!