MPMD Heatsink Casing

thingiverse

I discovered that the bowden connector on the heatsink of my MPMD was causing some issues. It's held in place by a single grub screw, but the torque from the bowden tube flexing tends to loosen it over time. I decided to design a simple printable solution and came up with a new casing for the heatsink that includes a snug collar for the bowden connector. This collar should help take some of the pressure off the allen screw by limiting the movement of the connector. I've only had this new setup working for a short while, so I'm not sure how it will hold up or if the idea will actually work. So far, I don't see any problems with the PLA printed part, but time will tell. My original prints are made from PLA, but using a higher temperature filament could be a better choice. I printed the part upright with full support. When installing, I used the original hardware, but you can use M3 bolts and nuts to connect it to the effector instead. Edit: I've added a new version with some minor changes. The fan clips are now positioned slightly lower for a better fit, and there's more space where the heater wires feed in so they're not as tight. I haven't put the new casing on yet for testing its fit, but I'll edit this when I have. The original one I printed was at 0.35 mm thickness, while the new one is at 0.14 mm. Edit 2: I've added version 3 with some additional changes. The effector bolt/nut holes are tightened up a bit because the nuts were loose in the other versions. I also closed off the back mount hole so the nut can't push all the way through.