CGS (Conrad Gear System) Extruder; yet anther metal gear extruder

thingiverse

User Allocated requested that this content be shared, so here it is. Purpose I created this due to the bulkiness of Gregs Wade which did not meet my preferences and I liked the idea of incorporating a metal gear. Use Three millimeter filament is recommended. It's intended for Sparkcube but can also be used on other standard Gregs flange models. Design Concept The extruder uses metal gears that are available at www.conrad.de, including a 12-toothed gearwheel and a 60-toothed gearwheel. The 60-toothed gearwheel powers the MK8 gear by turning a cut-down M5x50 screw to 35mm. Two 625 bearings carry the axle. To cool down PLA through the channel running towards the hotend, an option is available for mounting a 40x40 fan at the back. BOM One MK8 gear and four M3x12 screws (with length depending on your motor) are needed. You also need two 625 bearings, M5 x50 or similar with a shaft that's long enough to fit the gears, two springs for the idler, one M4 threaded rod with nuts, a fan plus screws, and optionally the M5 x50 screw. Tools No special tools are required. You simply need to drill holes into the gears to accommodate 5mm screws. Options Two body versions exist, including an attachment for the Sparkcube limit switch and one without it. Experiences I used this design for over half a year and >5kg of filament. It performed well until I changed to 1.75mm filament when I decided to switch to a direct extruder. Print Settings Printer Brand: RepRap Printer: Sparkcube Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: .2 Infill: 50% Notes The idler was printed on the side with support. I used ABS for the print. Thick walls are required due to its load handling properties. Custom Section I'll update the rudimentary instructions as soon as possible, hopefully with more interest from users it will motivate me to put more effort into creating the comprehensive guide ;-)