Qidi X-Plus 3 Filament Holder Seal

This is a plug to roughly seal the filament holder on the back of the Qidi X-Plus 3.

Some of the filaments that I print (ABS/ASA, nylon, carbon-fiber filled) emit particles and/or VOCs during printing. To mitigate this, I filter the air inside of the chamber. This works better if (1) the chamber is mostly sealed, and (2) the filter creates negative pressure by exhausting part of its output. This part is useful for (1).

I iterated on this a few times, but it's not perfect. It does a “good enough” job, in my opinion. I printed this in Shore 95A TPU - it needs to be somewhat flexible to fit.