I have never used the comic book boards but I believe that some people use 2 of them to give it more stability. I'm sure that someone that has used them will come along soon and give you more information. I bought acid free foam board sheets at the local Dollar Tree and cut it with my old rotary cutter. I cut my pieces 5" X 12" and I got either 9 or 10 pieces from each sheet. Bonus is that it only cost a $1 a sheet! (yes, I made sure it was acid free first!) I bought 40 sheets because I have a rather large stash.