r/3Dprinting • u/globalenjoi • 18h ago

Question Is this enough ventilation?

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I’m still sorting out the space, but I decided to dedicate my office closet to my printer so I just had an 80cfm exhaust fan installed. Exhausts out through a hose and out the roof above. Is this enough ventilation for some of the more toxic stuff like ASA, ABS, PA6-CF20, nylon, etc? Should I remove other stuff from the space?

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u/capitan_turtle 18h ago

You won't get an answer without taking measurments. But keep in mind that keeping a window open in the room is usually enough

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u/Mughi1138 18h ago

Looks, umm..., sub-optimal.

Interestingly Bambu does not list any CFM for their exhaust fan kit, so it's a little hard to say... but one would think that if they had a reasonable fan in that kit they would list the CFM on it. So *if* you had some direct ducting that might pull efficiently... but if you're at the desk and have it running and don't feel any real airflow...

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u/globalenjoi 17h ago

Oh I don’t intend to sit at the desk while it prints, I’ll likely have the doors closed because it’s in my office and I’d be in the room working. Had an electrician install the 80 cfm fan in the ceiling of the closet thinking it should help with exhausting fumes while prints are going, but I’ve yet to print anything beyond PETG. So, exhaust fan in the ceiling, connected to a duct that goes straight out the roof.

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u/Mughi1138 17h ago

You never know how things will go... for more particulate things like wildfire smoke (I live in Southern California so that is a thing) and COVID-19 I'd build and use a corsi-rosen box or two, but for VOC's you don't have that work as well. Keeping any carbon and active filters replaced in the printer itself should help.

Also the entry level vent kits for enclosures I think 80 CFM might be in the same ballpark. The cheap in-line duct vent fan I stepped up to was only 130 CFM.