Re: Enlarging Headstock Holes For New Tuners
Disclaimer: I'm a strictly amateur fix-it guy!
Originally Posted by
renoyd
... can I rely on simple self centering when enlarging or do I need to do something more involved?
The "self-centering" of the drill won't do it. When the sizes of the pilot & final holes are close, the differences between end-grain and side-grain tend to push the bit around; maybe bend it slightly, even in a drill press.
When I was in your position and the price of real luthiers' tools seemed astronomical, I found a conical stepped drill bit that worked (works!) well as a reamer. Unlike most that I find on-line now, it has a narrow taper, sort of like this:
http://www.mscdirect.com/product/details/06560619
The downside is that mine was about $4 in 1990 or so!
- Ed
"Then one day we weren't as young as before
Our mistakes weren't quite so easy to undo
But by all those roads, my friend, we've travelled down
I'm a better man for just the knowin' of you."
- Ian Tyson
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