Gearbox for standard bowden extruder
Description
Update 21.07.2019: After 5 month of using it I made some changes: - screws position and necessary length to offer an easier way to mount; - M5x45 Hex bolt instead of M5x45 rod obtaining a more rigid axis. If the motor doesn't get hot PLA can be used for small gear. No further development. A simple gearbox to improve your standard extruder. The gearbox can be equipped with 3:1 ratio gears from Drakon extruder - https://www.thingiverse.com/thing:2172854 or 2:1 ratio gears - https://www.thingiverse.com/thing:3355841. A short video https://youtu.be/xv-3Z3CFZbk Reliability: 2 days and counting :) There are 2 versions with 625zz and 605zz ball bearings. Boom and assembling see photos. The extruder can be removed without disassembling the gearbox. As reference Esteps from 93 to 285 with 3:1 ratio gears.
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