Quote Originally Posted by tpete61 View Post
What fumes are you referring to?
PLA doesn't have any and ABS is very slight, enough so that in a large room it certainly isn't toxic!.
could you share your sources ?
This article seems to say the contrary:
http://www.3dsafety.org/3dsafety/dow...mf2015_eng.pdf
this one too:
http://www.techworld.com/news/person...treet-3460992/

Better be on the safer side and ventilate. It's not because it does not smell that it's good for your health.