Cover Hanger Bolt Spacers
thingiverse
A pair of spacers for drandolph's "3mm hood and cover" http://www.thingiverse.com/thing:23386 4.3mm tall, 3mm interior dia, 4mm external dia, with a built-in 6mm dia washer on the machine-ward end. This piece keeps compression on both bolts holding the y-axis rods.
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