Y-axis Reprap redesign with integrated PCB Heatedbed.

thingiverse

The Prusajr's PCB heated bed offers simplicity and performance, but may warp due to heat, expansion, and corner fixation on Reprap's Y-Axis design. To counteract this, place the platform under a 3mm aluminum plate for rigidity and protection. Upside-down positioning ensures better heat distribution, with the upside PCB protected by the aluminum sheet. The group is supported by two vertical pieces that slide on Y-axis guides using Igus plastic bushings. These supports are easily assembled and disassembled for part unloading or cleanup. Belts are directly fixed to support pieces, featuring a threaded M3 hole for easy tightening. A redesign added rod extensions, increased upright height, and heat-resistant gaps; photos of the modified Prusa Air can be found at reprap.org/wiki/Prusa_Air. To assemble, cut aluminum sheet pieces, screw the PCB heated bed to the plate, insert bushings with rods and washers, and use belt clamps and M3 screws for tensioning.