Quote:
Originally Posted by Colin Small
Ah, I see.
Considering that there'll be three holes for joining the two sets of large pulleys, I don't see a problem with those. If I do end up having this made I'll probably use a jig for the driving pulleys.
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The same problem still exists.

This has killed me before, so I'm always careful about overconstraining now lol.
To avoid this problem, you could try using timing belt pulley stock instead of just pulleys. That would be a guaranteed fit. As it is, you are machining them anyway.