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How safe do you think it is to run an SLA 3D printer in the bedroom? I am planning to run Mi Air Purifier 3H/C while the printer is running, I am also thinking about adding this inside the actual printer (Elegoo Mini Air Purifier with carbon filter).

Is this safe or still too risky?

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    $\begingroup$ Ugh I wouldn’t sleep in a resin room. Any way you can put it in the bathroom and run the fan? Or garage, porch/balcony? $\endgroup$ Sep 18 at 17:45
  • $\begingroup$ even with all this air purification? $\endgroup$
    – abb
    Sep 19 at 17:26
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NO

SLA printers contain skin irritants inside the solvent, and those create rather noxious fumes. As described in Best way to deal with Resin Printers in your living space that is a health hazard, and can result in pulmonary irritation. Those irritants are molecule sized organic compounds, and even the best filters require an industrial-sized filter stack to catch everything.

In industrial manufacturing, rooms with resin in them require PPE that includes breathing protection, so having it in your bedroom, where you spend on average 4 to 8 hours a day, does expose you to more than the maximum allowable dose for an industrial worker.

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I'm running an Elegoo Saturn in a spare room, the smell is barely noticeable.

People tend to be over cautious about these things. Particularly Youtubers, because of fear of litigation, and because they tend to be at close quarters to resin for long periods of time.

It's perfectly safe to have a resin printer in a bedroom so long as you run the printer next to an open window, and keep the cover on.

My advice would be to store your resin separately (in a garage, for example) and to cover the tank with a proper snap on cover (or better yet to pour the majority of the content back into a bottle and store it outsides) over night.

Don't try to run the printer while you are sleeping. Not because of the fumes (which I would be concerned about) but because it will absolutely destroy your ability to get a good night's rest due to the repetitive noise.

For me, it's actually the IPA fumes which are the biggest problem.

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