Plastruder MK4
thingiverse
The Plastruder MK4 is an upgraded extruder design for MakerBot systems, boasting bug fixes and increased durability. Key improvements include a motor shaft support bearing, enhanced dino supports, better machined components (heater barrel, nozzle, etc.), and a more securely attached motor to the housing. Comprehensive instructions can be found at http://wiki.makerbot.com/plastruder-mk4
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