Automatic vent for the MMU3 Community Mod

This mod is a compilation of small contributions that I combined to update the MMU3 CM to the latest version of platform and allow the automatic vent opening and closing. STEP file? Yes. The vent has been remodeled form the ground up and the STEP file is down below so you can play with it.

Two of the corners were clipped so it now fits in a single piece on the Core One bed (and with some extra modding it could even fit in a MK4S). I reduced the overall thickness from 2 mm down to 1,6. One of the issues me, RAIDLime and maybe other found is that the platform flexes down due to the weight of the spools, locks the vent and the Nextruder isn't stiff enough to move it. The lever now has to be much longer so the vent must move as easily as possible. If you were thinking of adding threaded inserts to bolt on the vent, DON'T. I've made this myself and now the bolts are either super loose or the vent has too much friction. By screwing directly to PETG it's much easier to find the sweet spot. The left side of the vent now accommodates the vent block. It's held in place by two M3x4 bolts although you can easily increase the thickness of the block to accommodate whatever bolt you have.

The lever however hasn't been remodeled so, I can't provide a STEP file. I just plonked it onto PrusaSlicer, flipped it pointing upward, cut the lever in 3 parts, move the tip 30 mm upwards and extend the middle section to cover the gap and lay it flat again. And this is exactly what I uploaded so, if you want to also tweak the length of it, the first steps are already done.

Happy automatic printing!