I just Googled for "resin printer at home". There are loads of Reddit discussions and YouTube videos about it. Yes, precautions and a careful setup are required, but "isn't safe" does not look true anymore.
A lot of those people on Reddit and YouTube are doing dangerous things like handling liquid resin without gloves or eye protection, or not ventilating/filtering resin fumes that cause cancer. There are horror stories of people who splashed a bit of resin in their eye and went blind.
It's no more dangerous than a craft like woodworking or spray painting when you follow very basic safety protocols, but the safety culture is near nonexistent in the community.
It's possible, you have to put in some effort. Active ventilation to outside, working with PPE on, washing in isopropyl alcohol, curing with UV light. At least that is what I would do in smaller apartments.
I live in northern county and can vent my 3d printers exhaust to the outside. Friend of mine from CPH did the same with his resin printer.
And if you actively went it outside carpet and close proximity should ok ok'ish health wise. It's just effort and noise that a lot of people don't like to put in.
> That rules out most apartments in countries like the USA and UK
Yes I've always wondered why they love carpets so much. When I lived in such an apartment it was terrible. Always dirty and dusty. I'd much rather have a plastic, wooden or tile floor (the latter not ideal due to breakage though).
But you can ventilate, especially if you blow the air outside through an active blower.
And finally, makerspaces are a great way to do these things anyway. A community that can support and help you when you run into issues, friendly people around to borrow equiment and materials from, and they're usually pretty cheap if you don't get a fixed desks.
Hmm it depends on your sensitivity also. I know some people at our makerspace who have serious allergies to the stuff, even a minor trace and their skin gets all red.
Not everyone is as careful with the stuff so that doesn't really help.
It's fine as a token for the game, but people enjoy the painting etc too.
A resin printer isn't safe for use in an apartment, otherwise that would probably be more common.