i finally got a respirator, and i'm still rounding up the supplies for fiberglassing, and i'm planningto fiberglass my robogenesis beta models. (nice and easy to start with) I'e seen on this site that you need to work in a well ventilated area. is this with a respirator? or is it ok to fiberglass in a small shed heated with a heater, in the middle of winter with just a respirator, goggles, gloves and old clothes?? thanks guys.