Belt Reduction Drive direct extruder stock Ender Eplate

thingiverse

This system solves several problems driving the cheap Bondtech style dual gear extruder: * Eliminates problems at high print speeds (above 120mm/s skipping with PLA). * Correct the mechanical alignment of the cheap dual gear extruder available everywhere. My design adds a great level of accuracy by using some simple belts, pullies and bearings to support longer moments within the extruder. Could probably use a "pancake" NEMA to reduce weight but didn't bother because I haven't had any problems with ringing or artifacts/skipped steps at any speed with 40mm NEMA motor. Steps/MM after install are around 420. NO affiliate links Needed to complete: * BondTech style dual gear extruder https://tinyurl.com/Dual-Extruder * This extruder is designed to be mounted to the Stock Ender 3 /3 Pro Hot end Plate * 1x 5mm x 80mm stainless screw https://tinyurl.com/5mm-screw-assortment * 2x 5mm Nylock nuts https://tinyurl.com/5mm-Nylock * 1x 20 tooth GT2 Timing Pully https://tinyurl.com/20T-GT2-Timing-Pully * 1x 60 tooth GT2 Timing Pully https://tinyurl.com/60T-GT2-Timing-Pulley * 1x 200mm GT2 timing Belt https://tinyurl.com/GT2-Belt-assortment * 1x 20mm x 3mm https://tinyurl.com/Flat-Head-assortment * 4x 18mm x 3mm Cap head screws https://tinyurl.com/Short-Cap-Head-assortment * 3x 40mm x 3mm Cap head screws https://tinyurl.com/Cap-Head-assortment * 1x extruder spring (Optional) https://tinyurl.com/Extruder-Spring * 4x 625zz bearings https://tinyurl.com/625zz-bearing