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  • Well you cannot exchange metal parts with PLA, as it's simply too weak and too expensive. Aluminium actually costs less than PLA, relative to weight. However, you can print all parts INSIDE enclosure with PLA. No problem with that :) Aluminium parts are however relatively easy to source and now there is also BOM calculator, which will allow you to make quick changes to design size to fit any 3D printer of your choice.

  • Exactly. If you have tube leading outside, than you can skip the filter BUT be sure to have FAN installed in that tube and also keep tube closed when not printing. You could also install servo or relay to open/close the tube when using enclosure. It would be quite easy mod with custom functions in mainboard.

Best regards,
Jure :)