520
WHY???
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A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

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This is a science community. We use the Dawkins definition of meme.
Presumably to do with vibrations at a harmonic of the RPM?
Yeah apparently it has to do with the bit sort of sliding in behind the holes it carves out with its blades. Doesn't happen with a regular drill bit because those don't have sticky-out parts.