The other option I was looking at was oven curing with a silicone plug inside the part that would expand and create pressure. My garage is ~560 square feet and I have to be really careful about taking floor space.  Safe ventilation would be an issue since my living room and kitchen are above it. I am also not sure how easy it would be for me to get the silicone part back out with the shape of this part. I do have a fireplace in the garage I could run aluminum ducting through...