Ultimaker 1 strong spool mount for 6mm rod
thingiverse
This spool holder fits sneakypoo's 6mm low friction spool holder, allowing for a deep hole to accommodate a 6mm nyloc nut. The mount is secure enough for proper attachment to an Ultimaker 1. For printing, use 0.1 mm layer height and 35% infill; however, given PLA's brittleness and the model's four small hooks, you may want to consider 100% infill.
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