I've been using these comic book boards for the past couple years now. I purchased sizes 6.75x 10.5 and 8 x 11. Anything less than a yard goes into my scrap totes. 1yd to 2yd I used the smaller size and 3yd to 5yd I use the larger size. Anything larger than that I fold onto bolt boards. I have purchased over 1,500 so far and need to get busy folding those not on boards as I'd ran out a while back and had to order more. Haven't had any problems with my fabrics either. I do try to order that which is acid free though.