"You can buy 1" thick sheets of neoprene for rounds, 2" thick for rectangular. We made rounds, 2x10, 2x12, 4x10, 4x12, 6x10's, etc. Sometimes you run into an odd size (8x10) which can be sealed using two…"
"Similarly, I contacted a local mattress making/repair place and I had them cut to size - very inexpensive, I thought.
I then use sandwich bags (free-of course) to stuff them into - otherwise you might lose about 6 cfm through each. They last quite a…"
"I found cheaper blocks at several upholstery shops in different areas of the country. You may need to search for smaller shops. I bought large trash bags of scrap foam for $5 each. Some of the scrap wasn't usable, some needed to be trimmed. For…"
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