Prusa Mini(+) Mount for Dragon Hotend, With a PC4-M10 Bowden Tube Connector

by fuchsr

Mount for a Dragon hotend. Threads for a PC4-M10 push-through connector so no need for the small PTFE tube in the hotend The Dragon hotend is a great replacement for the standard E3D V6 hotend on the Mini as it allows for easy single-handed nozzle swaps while—unlike the Revo—supports the whole E3D V6 nozzle ecosystem. This is a remix of @sebastian's excellent mount for the Dragon hotend to support push-through PC4-M10 pneumatic connectors. The olive-style Bowden tube with its weird connector is, shall we say, suboptimal. There are PC4-M8 connectors available that make removing the Bowden tube much easier but I'm not aware of anyone who has been able to reliably source PC4-M8 connectors that are push-through. That means you still need the small piece of PTFE tube in the top of the hotend (and the extruder). I remixed sebastian's mount to replace the PC4-M8 with a thread that allows you to use the more common PC4-M10 pneumatic connectors, which are readily available as push-through, so no need for that small PTFE piece anymore. I have created two versions, both derived from v4 of sebastian's design. Thank you for providing the Fusion 360 files! One retains the metal inserts used in that design to catch the screws. For the other version, I reverted back to regular hex nuts as I found them easier to use, with one exception: there is not enough space for a nut to hold the upper left fan screw, so one metal insert is required even in the hex nuts version. Fusion 360 files included. Warnings and errors in those files are from the original .f3d file used for the remix. Bill of materials 1x 295 mm long PTFE tube for 1.75 mm filament (1.95mm ID, 4mm OD), to replace the Mini's stock Bowden tube [sorry, there was a typo—245mm—, which is too short] 1 PC4-M10 pneumatic connector (e.g., https://amazon.com/gp/product/B01IB81IHG) For the brass insert version: 4x brass insert M3 x 4 x 5 mm, e.g., https://amazon.com/gp/product/B07MWBJB67 For the hex nut version: 1x brass insert M3 x 4