SquareBOT extruder

thingiverse

Archive model Not recommended for repetition New SB extruder: https://www.thingiverse.com/thing:2658691 Direct extruder for SquareBOT 3D printer. Fits Nema16/Nema17 stepper motors with planetary gearboxes any gear ratios. Stepper motor is Nema 17 with planetary gearbox 5:1 gear ratio. Part number is 17HS13-0404S-PG5 from StepperOnline. Nema 16 motor has an identical size gearbox except shaft diameter is 8mm. Short-distance E3D hotend will be used, so bottom side has mounting groove. SquareBOT 3D printer: http://www.thingiverse.com/thing:480008 News: 04.01.15 Printed it works perfectly, upload photos soon. Middle_part_v2 rev.03-01-15 Mount_v2 rev.03-01-15 Added mount plate for MGN12H block carriage Instructions Knob part needs support thick walls. Fan is 40x40x20mm. Additional parts needed: Extruder gear feeder roller bore ø6mm, my was ø5mm ream it up to 6mm. V625ZZ ball bearing V-grooved. Bolts M3x30mm, 10pcs total. Bolts M3x25mm, 4pcs total. Bolt M3x20mm. Bolt M3x10mm with M3 hex nut. Countersunk head bolt, 16mm. Plain washers, M3, 12pcs total. Inserts M3, ø5x8mm, 6pcs total. Shaft 17mm ø5mm for ball bearing. Spring ø7.5 x 8.1-15mm. PTFE tube ø4mm needs to be inserted under gear as filament guide.