Dual Drive Bowden Extruder

thingiverse

Dual drive, Bondtech BMG inspired bowden extruder. Parts: <a href="https://www.amazon.com/WINSINN-Extruder-Bondtech-Stainless-Filament/dp/B0757HSR6X/ref=sr_1_fkmrnull_3?keywords=WINSINN+for+Btech+Extruder&qid=1554951431&s=industrial&sr=1-3-fkmrnull">BTech Dual drive gears</a> <a href="https://www.amazon.com/Miniature-Bearings-MR63ZZ-L-630-673ZZ/dp/B00ZHSQX42/ref=sr_1_2_sspa?keywords=3x6x2.5mm+bearings&qid=1554951474&s=industrial&sr=1-2-spons&psc=1">3x6x2.5mm bearings</a> <a href="https://www.amazon.com/cSeao-Phillips-Machine-Assortment-Stainless/dp/B07CWF669Y/ref=sr_1_19?keywords=40mm+m5&qid=1554951183&s=industrial&sr=1-19">40mm M5 bolt and nut</a> / <a href="https://www.amazon.com/uxcell-Plated-Fasteners-Butterfly-Furniture/dp/B015A3H2GQ/ref=sr_1_6?keywords=m5+wing+nut&qid=1554951570&s=industrial&sr=1-6">wingnut</a> The bearings fit perfectly on the ends of the rod provided with the BTech gears, and this assembly slides smoothly into the back of the extruder assembly. The hinged door securely holds it in place and presses against the gear attached to the stepper motor. A 40mm screw and wingnut allow you to adjust your desired tension on your filament. Bowden coupling threads and filament path are copied directly from Walter's design.