Hi Mark not sure what kind of casting you are doing, multi color pours, embeds but if you are doing clear casting you might look at using epoxy. There is little to no fumes, but Alumilite has little to no fumes either to me. If you are doing multi color pours epoxy would not be good takes too long to cure the colors would mix.
Mike
Hi Mike:
I did about 40 clear alumilite blanks. 30 steampunk style, 10 with stamps. This was for family and friends. I have about 25 relatives that I wanted the stamp pens for their individual interests (the pics in a previous post was for my anniversary).
All clear, no color so it was quick. Of all the casts, only one was with a few bubbles, so technique was fine.
However, my face blew up like a balloon, my arms were covered in a rash for almost 5 weeks! 3 weeks of prednisone. My wife has worked with this stuff for years, monthly OSHA safety meetings, etc... She picked up on it immediately and is not optimistic. The hood may work though.
When casting I was in a closed basement with typical woodturning air filters and a simple respirator.
Now I'm in an open garage, 4 floor fans stacked 2 x 2 blowing air away from the bench, plus the enclosed hood with external air evacuation vented outside the garage wall. So I'm about 20' from where the air will purge. We'll see.
I may try the Epoxy - You already sent me the contact name - thank you.
Allergies started when I was 2 minutes old, so I'm used to it and will not push it. Turning is too much fun and I don't want to lose it totally as a hobby.
