Originally Posted by cranky1
Well, it's more accurate to use a reamer instead of a drill bit....
Exactly. If you want a smooth bore to your hole, use a reamer. BUT #61 to #80 isn't going to be an easy find.
For drill bits, just buy them online. MSC, Travers, J&L Industrial are good places to order with fast delivery.
And get a set of 0-1 mics. #61 thru #80 bits are only a thou or so different from each other. Chances of getting 20 from anywhere in all the correct sizes is a crapshoot. Get a 61 to 80 drill index to keep the smallest in