Multi-extruder derived from the Prusa Multi Material 2 upgrade.

thingiverse

This is an attempt at creating an extruder for more 5 feeds of filament, using only two motors. This is to enable use of the e3d toolchanger, or other multi-head systems, without the requirement for an expansion board, on the Duet Wifi. I'm fairly confident this design will work just as well as the Prusa Multi-Material upgrade that it's based on, as I haven't modified any of the critical, functional parts, except to remove the redundant selector. Modifications made to the parts include: Increasing space, so that standard M3 nuts can be used. Designing a clamp for PTFE tube press fittings. Removing redundant material used for fitting the selector. <h3>The source material came from: https://www.prusa3d.com/prusa-i3-printable-parts/</h3> <blockquote>Prusa's license for referenced work is CC BY-SA 4.0 ... the same as I have chosen for this listing. Therefore, as far as I understand it, all derivative works of this model must contain information attributing it to Prusa, and must be licensed either under an equally open, or more open license.</blockquote> The BOM is not exhaustive, but was created by carefully following the instructions found here; https://manual.prusa3d.com/c/Original_Prusa_i3_MK3_to_Multi_Material_2_upgrade I'll hopefully also be able to explain how to set up a slicer to operate with this at some point, but I'm yet to convince e3d to let me on the toolchanging beta. Some discussion of wiring on duet3d; https://forum.duet3d.com/topic/7039/wiring-and-extruding-using-an-e3d-toolchanger-without-a-duex