MAK BambuLab Carbon HEPA Exhaust Filter

Bambu Lab X1 / X1C comes equipped with small carbon filter, which is supposed to filter the air blown out from the chamber. It is quite tiny though and offers no mechanical filtration.

This is what this filter container is trying to address. It has quite large (about 500 ml) space for active carbon and a mount for popular Philips FC8031 HEPA 13 filter (or its various not expensive clones).

Bill of material

• printed parts (two grids and two screws required, Frame A is provided for two magnets sizes, use 6x3 if you have a choice)
• ten neodymium magnets, 5x3 or 6x3 mm
• some TPU filament wire (about 70 cm total)
• active carbon pellets
• Philips FC8031 HEPA 13 filter or its equivalent

Active carbon is cheap when bought in pellet bulks for aquariums.

Assembly & Prep

• Glue frames A, B and C together with grids in between (depending on your filament CA (so called Super Glue) or Epoxy based glue should work well). Be careful to do not leave any spaces between the frames for the air to escape.
• Do not forget to put grids in-between the frames before gluing them!
• Glue in all ten magnets.
• Put TPU filament wire into rows in Frame A and Cover. I will help sealing the filter, so the air is forced to flow through it.
• Fill the container will active carbon.
• Close the cover with screws.
• Install HEPA filter.
• Stick the whole filter at the back of the printer, over the exhaust fan.
• Done.

Printing

Easy print, no support needed except Frame B part (best to use tree supports).

Try to keep it as light as possible. I printed it using ASA, with 2 walls, 10% infill, 0.2 mm layer height.