Dang it!
Now you got me curious about this stuff again!
Now that I've got a fairly large vacuum chamber, I might build a frame that'll fit inside. I figure plywood & pine, sealed in parrafin so it will release when cured, and "C" clamps to hold it together. Somebody on one of the other lists or forums a couple years back mentioned making some out of denim, and was pleased with the results.
Harry Jensen
Fresno, CA