I was at Michael's today looking for Foamcore but they only had something called foamboard. Is this the same thing? It had posterboard on both sides with something in the middle and was very thin and was priced at $2.99 for a 20" x 30".
It didn't come in different sizes though, just one kind.
I'm a little confused on what I should be looking for.
There is also the cheaper kind where the outside is like paper instead of slick like posterboard. Either will work and both should come in different thicknesses. I know at my Michaels there are quite a few different kinds. The type I use (the cheaper ones) are on the right.