Direct Drive Bowden Extruder; MK8 version

thingiverse

Direct Drive Bowden Extruder designed for MK8 Pulley System Simplify and optimize 3D printing with this direct drive extruder featuring an open, compact design. Cleaning and adjustment have never been easier thanks to its simple mounting system that utilizes two M5 bolts at a spacing of 20mm. Engineered to be easily drilled out for use with 1.75 or 3mm filament, it's also designed to accommodate a 5mm or 1/8 coupling. Optimized for the MK8 pulley system, this extruder boasts a pulley positioned close to the motor base, effectively reducing the cantilevered load on the motor shaft. Innovative design elements include a slotted tensioning bolt catch, providing quick release functionality for efficient and streamlined printing. **Assemble with Ease** Before beginning assembly, separate and spread out the idler arm for optimal placement. Choose either left or right orientation, taking advantage of the included mounting plate template. For customized solutions, feel free to design your own mounting configuration to suit your unique setup needs. Required Bill of Materials: - 1x High-torque Nema 17 stepper motor - 1x MK8 hobbed pulley equipped with a set screw - 1x pneumatic coupling component - 1x precision-grade 625 bearing unit - 3x M3 bolts measuring 8mm in length - 1x adjustable bolt, converting from M3-12 to M16 measurements - 1x secured M5 bolt coupled with a nut - 1x spring tailored specifically for over-bolting functionality - Utilize either knurled or winged nuts as preferred for optimal tension and release performance. A suitable prototype design can be found at http://www.thingiverse.com/thing:102153. To optimize the extruder, consult with a mounting engineer regarding your setup to identify specific bolt requirements, tailoring your assembly process accordingly.