Question on these comic boards....they are about size of comic book? Since it has been a VERY long time since I have owned a comic book, what size is that.....the same as say a quilt mag? What is the thickness of the cardboard...is it like a poster board-the thicker ones. Thinking of doing something similar with smaller pieces of fab...I have large cuts on the cardboard frames from Joann's....then when some is used....there is where I need the downsized board.. Just thinking......