Fine points of drilling bridges

Robert Goodale rrg@nevada.edu
Sun, 13 Jun 1999 07:45:57 -0500


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What kind of drill are you using? (i.e. electric hand
drill?)  May I suggest using a Fordom high-speed unit with a
long flex cable.  The speed will be to your advantage in
piloting the hole.

Rob Goodale, RPT



Brian Trout wrote:

> For those of you who make bridges, I'd like to hear what
> kind of drill bits you're using to drill the bridge pin
> holes, and the technique you use. Here's what I've been
> doing.  I've been laying out the pattern on the fresh cap,
> marking it fist with a pencil mark, and then with a very
> sharp awl (not deep, just a mark I can see, perhaps 1/32"
> deep), and proceeding to drill with the standard drill bit
> from Apsco, by hand. What can I do to keep the wandering
> bit to a minimum?

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