Quote:
Originally Posted by Peck
he isn't talking a generic drill set, he is talking a real machine shop's drill set where they have the drills accurate to tenths of a thou. An E drill is a generic and it is typically .250, accurate to the thou. If you are pressure fitting with generics... be really careful and take plenty of measurements.
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There is no twist drill that can create a hole that is accurate within a tenth.
The diameter of the drill itself may be ground more precisely than on a cheapo drill, but the geometry of the tool inherently prevents it from making extremely round/accurate sized holes.