I was pretty scared of playing with resin in my basement.  With casting toys and painting stuff, I had nightmares of these noxious green fumes wafting up throughout the house making everyone sick.  But now I don’t need to worry.  I installed a blower in my work area.  It’s connected with a straight run of ducting to a dryer vent outside the house. The blower I got moves 265cfm of air so it’s pretty beefy.  It’ll exchange the air in a 1200 cubic foot room in under 5 minutes.  Nice!  Next I may build a hood out of cardboard to direct the flow but I’ll see how it works.