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Barrel cooling duct for MendelMax 2 & JD Dually Belt Driven Extruder
I was having heat creep issues in my J-Head barrel during dual extrusion that wouldn't be a problem with single extrusion. It is recommended to cool the barrel anyway.3D printer parts and enhancements
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I designed this to fight the noted heat creep problem. I also wanted to prevent intake and exhaust turbulence from warping the part, thin profiles are particularly susceptible.
This is designed around the J-Head hot ends, it could work with other hot ends that have a 16mm diameter barrel.
Materials and methods
I designed this intending for 0.5mm line width. So a 0.4mm or smaller nozzle is recommended.
You will need to tap the MM2 carriage, I used M4, M5 and M6 taps for the various holes. You will also need some miscellaneous M3, M4, M5, and M6 hardware. I apologize for the eclectic mix of hardware needed, but that's what ended up working given the mount plate in question
All screws I chose are pan head screws, Phillips drive. Others will work.
- 2x M6 x 8mm (or 10mm, 12mm with flat washer) for the rear side mounts
- 1x M5 x 8 for the rear center mount
- 4x M4 x 8mm, 10mm or 12mm long pan head screws for the front side mounts plus to screw the front and rear sections together
-2x M3 x 6mm (or longer, 8 and 10mm will secure the top fan shroud)
-4x M3 x 18mm screws to mount the fan & intake to the rest of the ducts.
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