So far, I got 3x of the HEPA filters (same as Bento uses) at nozzle height pulling air in, then a very large carbon stage, then out to the very bottom of the chamber to get a nice cycle going and so that the exhaust doesn’t hit the build plate 
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Very nice! Just a suggestion for the carbon chamber. Make it so there’s either honeycomb cells or trays that hold the carbon so that it doesn’t wind up being just a big container that’s densely packed. Try to imagine about 40% unrestricted air flow. Helps keep the fan happy and still works good.
That is a good suggestion for vertically oriented filters but there won’t be any honeycomb cells in this one as the tray is horizontally oriented. If the user wishes to reduce the air resistance (and also reduce the VOC filtration efficiency at the same time), they can do that by using bigger pellets and using less of it.
Looks great. Let me know when I can print it. Hopefully it ends up being universal for the right side also.
You’ve got a point. I wonder if those anycubic carbon filters are acid free. Ya know, those cube looking ones that look like a catalytic converter when you look through them lol. Those would be sweet as they’d be quick swappable. Not as cheap as pellets though.
I had one in my printer and hasn’t rusted it out!
It will be with enough VHB tape 
(I’m using existing mounting points but the part has a flat back surface)
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Sorry for the questions but does the h2d use the same fan as the x1c?
No problem. It looks like the same fan but there is some extra foam taped to it for vibration isolation so it’s not fully coupled to the ducting plastic
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OEM air filters seem to be perpetually out of stock so I uploaded the refillable one.
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Nice work! Take my boosts! lol
Very kind of you, thank you! 
Was custom made to your spec! lol
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Prototyping in progress!
I had designed everything to use multi-material supports because we can do that now - but ended up removing all of the supports to save 3 hours in print time, except for these built-in supports to be able to print the big part at an angle (which is what allows removal of most supports). Looking forward to seeing how clean these snap off
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This looks awesome. I’ve been printing mostly ABS-GF and the integrated filtering is not enough to handle the VOCs on longer prints. Look forward to your progress!
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Thanks! Here is some progress - it’s slow with family commitments in the weekend but the test print, test fit and the vibration isolation test went well!
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can’t wait to print this. I have a roll of PA-CF waiting for it lol
Ah I want to use PA6-GF I have here too but I want to wait for my AMS HT to get here first so I can dry it at higher than my current dryer max or 70! (First world problems, ABS-GF is perfectly suitable…)
I might wait for my ams-ht show up too. I just cooked my pa-cf for 3 days at 70°, so it should be dry enough, maybe lol. Maybe I’ll just run some calibrations on it for now so it’s ready to go.
I’ve actually got 3 0.5kg spools of fiberon pps-cf I could use.
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I was thinking of adding a HEPA filter to the exhaust of the printer but did not find a suitable one. I wound up buying a cheap an IKEA Uppatvind air purifier and converting it for dual HEAP H12 + carbon filtration and placing it beside the H2D exhaust duct. This seems like the optimal setup as you are not limited to smaller filters and it will filter all the air exiting the printer as well as any air leaking from other orifices of the printer, poop duct etc. Since running it for a few days Ive noticed a lot less dust in the printer room as well as reduced smell when printing.
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I tried to print some PA6-GF - I had dried earlier and it didn’t look good - and yeah it’ll take days to dry at 70 (and prob not enough).
Got the second prototype made in ABS-GF - time to give it a go! Just gotta find something to print…
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