Prusa rail kit
thingiverse
This kit enables the utilization of a rail on the Y-axis in a Prusa setup. For more information and updates, visit http://www.thingiverse.com/thing:34691. To use it, print two clamps (one set or individually), assemble them with 10 m3 screws (4 for motor, 2 per clamp, and 2 for belt tie-down), 2 m3 nuts, and optional washers. Additionally, require an M5 20mm bolt with washers, and two 605ZZ bearings for the idler. Purchase a rail with carriage from http://store.trinitylabs.com/linear-rail-and-car-for-y-axis/. If opting for 608ZZ bearings for the idler, bore the idler mount hole accordingly before or after printing.
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