Anybody talking about the toxicity of lactic acid on the context of perfectly fine breathable air is bull of bullshit.
And yes, we have known since forever that it is highly toxic. It's also common on your organism, on much higher concentrations than you will get from your printer.
Anyway, the common advice applies. If you get a 3D printer, use it on ventilated spaces, and if you will print with anything that isn't PLA, make sure it is well ventilated and doesn't ventilate into anybody. What really surprised me was this:
> these tests indicate that exposure to these filament particles could over time be as toxic as the air in an urban environment
I expected it to be much worse. Printing ABS does surely not smell like an urban environment. I guess a 3D printer generates much fewer silent poisons than a city.
And yes, we have known since forever that it is highly toxic. It's also common on your organism, on much higher concentrations than you will get from your printer.
Anyway, the common advice applies. If you get a 3D printer, use it on ventilated spaces, and if you will print with anything that isn't PLA, make sure it is well ventilated and doesn't ventilate into anybody. What really surprised me was this:
> these tests indicate that exposure to these filament particles could over time be as toxic as the air in an urban environment
I expected it to be much worse. Printing ABS does surely not smell like an urban environment. I guess a 3D printer generates much fewer silent poisons than a city.