There is a new bit out by Irwin that is intended to replace Spade
Bits. The only review I saw was that it was 3 times faster and self
cleaning. The reviewer seem to love it. It is called the Irwin
Speedbor Max Drill Bit.

Amazon has a kit that includes a 3/4"

http://www.amazon.com/IRWIN-3041006-...4491618&sr=1-6

But I'm sure you can find the individual bit if you look around.


I would say that a home made jig as mentioned in an earlier reply that
will allow you to make uniform holes and this bit may well be the way
to go.