Simple sliced Wade's Geared Extruder

thingiverse

This extruder design is for those who want to build a RepStrap without spending much money. It requires simple tools and minimal purchased parts, allowing users to reuse components when printing Mendel or other projects. Inspired by BodgeItQuick's version and KurtCircuit's Sliced Wade's Geared NEMA 17 Extruder, this design is made for easy construction with mostly drilling required. Constructed from five layers of 9mm MDF, ply, or any material that can be machined, the extruder is designed to be built by the user and shared for feedback before testing. It requires additional parts such as gears, which can be sourced from old inkjet printers or purchased elsewhere, and a set of taps and dies for the hobbed bolt. The design also features a Bowden cable for improved print area limitations and uses a captive nut/bolt instead of springs to apply pressure on the idler, reducing complexity. An update reveals successful construction with good torque and grip on 3mm threaded rod, pending testing with electronics board and filament. The user-friendly instructions include downloadable PDF, SVG, or Adobe Illustrator files for easy printing and assembly guidance. No dimensions are included on the printout, but dimensions are provided for reference. Drilling is advised using a guiding drill of 2-3mm, and elongating slots with a file or jigsaw. Bearings may require shims to ensure tight fitment.