Quote:
Originally Posted by Oblarg
It'd also be a good opportunity to get the students to practice drilling into the end of a shaft accurately with our hobby lathe, which is something we seldom do (c.f. turning down a shaft).
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I really like thunderhex for this, just because it has the pre-bored hole. This keeps the drill relatively concentric to the axle and helps with chip clearing (the two biggest issues you have to face with small diameter drills).