I just ordered my supplies to start pouring plastics. I'm very excited to start learning this. I've also got supplies for jigs but I ordered the heads already poured. I've got all the safety equipment except for a respirator, Do I need one or just the paper type mask? Also I'm going to being doing my tackle making in my building which has a 4' wide door and also a window. Will this be sufficient if I set a fan near the door?