Belt Reduction Drive direct extruder stock Ender Eplate by NDCSR

Last crawled date: 3 years, 4 months ago

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 screwhttps://tinyurl.com/5mm-screw-assortment


2x 5mm Nylock nutshttps://tinyurl.com/5mm-Nylock


1x 20 tooth GT2 Timing Pullyhttps://tinyurl.com/20T-GT2-Timing-Pully


1x 60 tooth GT2 Timing Pullyhttps://tinyurl.com/60T-GT2-Timing-Pulley


1x 200mm GT2 timing Belthttps://tinyurl.com/GT2-Belt-assortment


1x 20mm x 3mmhttps://tinyurl.com/Flat-Head-assortment


4x 18mm x 3mm Cap head screwshttps://tinyurl.com/Short-Cap-Head-assortment


3x 40mm x 3mm Cap head screwshttps://tinyurl.com/Cap-Head-assortment


1x extruder spring (Optional)https://tinyurl.com/Extruder-Spring

4x 625zz bearingshttps://tinyurl.com/625zz-bearing