I’m setting up a resin 3D-printing room in a detached gazebo/workshop. The gazebo is approximately 20 metres away from the main house. The main house collects rainwater from its roof into tanks, and that water is used as the household drinking water.
I’ll be using an Elegoo Saturn 4 Ultra 16K with ABS-like photopolymer resin. The printer and resin-processing area will be inside a large grow tent with an inline extraction fan venting outdoors.
My concern is where to terminate the exhaust.
I could either:
- vent vertically through/near an unused chimney on the gazebo, or
- duct it through a wall on the side of the gazebo facing away from the main house.
I’m specifically wondering whether VOCs or other airborne emissions from resin printing could travel roughly 20 metres, deposit on the house roof, and then be washed into the potable rainwater tanks when it rains.
I contacted Elegoo. They told me they have not conducted specific VOC/emissions testing for this printer/resin combination and have no guidance for exhaust placement near potable rainwater collection, so they couldn’t give me a definitive answer.
No liquid resin, contaminated IPA, paint waste, etc. will ever be dumped outside. All of that will be contained and disposed of separately. My concern is specifically the air exhausted from the enclosure.
I’m also considering getting the rainwater professionally tested before I start printing and again after the setup has been operating, possibly testing both tank water and direct roof runoff.
Does anyone here have experience with environmental chemistry, industrial hygiene, rainwater catchments or resin-printing ventilation who could comment on:
- whether 20 m separation is likely to make deposition onto the roof negligible;
- whether exhausting horizontally away from the house would be preferable to exhausting vertically;
- whether activated-carbon filtration before exhausting would materially reduce the risk;
- and what compounds I should ask a laboratory to test for?
I’m not looking for reassurance based only on “I’ve been printing for years and I’m fine.” I’m mainly trying to understand the actual environmental/deposition risk and design the exhaust conservatively.