Rapman Extruder Carriage

thingiverse

The extruder carriage features integrated cooling ducts, lights, and a reduced part count. It is inspired by Chylld's design (http://www.thingiverse.com/thing:15044). This carriage eliminates 4 components from the original Rapman assembly, lowers the extruder assembly by ~5/8" and raises the nozzle by the same amount for better stability during printing. The carriage is also widened in both directions for greater stability. Instead of recirculating ball bearings, plain bearings are used to prevent misalignment-related wear. LED lights illuminate the nozzle area, while an integrated cooling duct with a fan ensures optimal cooling. A top plate for limit switches is also included, but outriggers were abandoned in favor of plain bearings. Please feel free to comment or ask questions.