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Hi again. Have the central part ticking really well - so nice :) My problem has actually come in the final gear on the radius of the bowl. It seems slightly too large and forces up the central part to get the two screws to mate. Its shank also seems slightly too long? About to reprint, just wondered if it was something anyone else had noted? PLA, 0.2mm.

http://imgur.com/a/6pqbW

Ultimately creates too much friction and puts great force on the two screws holding the outermost gear to the central timepiece.