AM8 / Anet A8 BIQU H2 V2.0 Extruder Mount

thingiverse

Note: This and future projects are now available on Printables, see https://www.printables.com/model/165992-am8-anet-a8-biqu-h2-v20-extruder-mount . This design replaces the stock X carriage bracket of a Anet A8 / AM8. The backplate features a mounting pattern for a BIQU H2 V2.0 extruder / hotend, using 4 attachment screws. A second part features attachment points for a 5051 blower fan, an inductive bed level sensor, as well as a mount point for a drag chain (see my [drag chain design](https://www.thingiverse.com/thing:5230694)). The backplate comes in a 4mm version, and a 5.7mm version. The 4mm version is meant to be used with a 1.7mm drilled aluminium backplate. The 5.7mm version is meant to be used standalone. For the drill pattern, see the technical drawing. You can probably use a 1.5mm or 2mm plate as well, 1.7mm was just what I had around. In fact, you can use any thickness you want, the only thing it influences is the alignment of the drag chain mount points and the lenths of the bolts required. I included a model of the aluminium backplate, if you want to try and print it instead (e.g. if your printer can't pause prints). I do recommend the 5.7mm version for printing though. Two fans are attached, the aforementioned 5051 blower with a modified centered fan duct, and an optional 40x10 replacement extruder fan if you want to replace the included 24V 35mm fan. The extruder fan duct is based on this design: https://thangs.com/MandicReally/Angled%2040mm%20to%2035mm%20Fan%20Duct%20-%20Biqu%20H2%20Cooling%20Fan-22933 (Creative Commons License) The optional cooling fan duct is based on this design: https://www.thingiverse.com/thing:2305368 (Creative Commons License) . I do recommend using it though, because it provides additional attachment points for the extruder. Additional parts required: - (Optional) Drilled 1.7mm aluminium backplate - BIQU H2 V2.0 extruder / hotend: https://www.biqu.equipment/products/biqu-h2-v2-0-extruder - Extruder gear PTFE grease: https://www.amazon.de/gp/product/B007UU9JMS - Replacement heater cartridge if you use 12V: https://www.amazon.de/gp/product/B082FCW22C - 5051 blower fan: https://www.amazon.de/gp/product/B0177QGEPY - (Optional) 40x10 extruder fan: https://www.amazon.de/gp/product/B009NQLT0M Nuts and bolts needed (maybe I forgot some, use your own jugdement): - 12 * M4 x ~10mm countersunk bolts (for backplate) - 4 * M3 x ~10mm countersunk bolts (for extruder from back and front) - 2 * M3 x ~10mm bolts (for extruder from top) - 4 * M3 x ~20mm countersunk bolts (for parts fan and sensor) - 4 * M3 nut (for parts fan and sensor) - 4 * M3 x ~15mm bolts (for extruder fan) - 4 * M4 nuts (for belt bolts) - 2 * M4 x ~10 bolts (for belt bolts)