Originally Posted by
danece
"before that I went to a sign shop, after calling around first, and purchased CoraPlast boards from them
Is Foam Core and CorePlast the same thing?
The foam core I'm picturing is from my old photography store days, and it's like core plast (a honeycomb of plastic) but with foam between the layers instead of the same plastic. I've seen what the foam does with exposure to sunlight... I would worry about the damage to fabric from the foam breaking down even just with exposure to the air long term.
The core plast, the sign companies use a different grade of it ("Sign grade"), some of it's supposed to be archival. They should have offcuts that should be pretty much free. My sign company client gave me a bunch happily, because it saved him "cleaning up". Now I have 3 full 4'x8' sheets in the garage that DH brought home from work because they were removing it from a display. I have no idea what I'm going to use that for, since I'm on a fabric moratorium, since I quilt more than I piece...
Maybe a design wall.