i will put my material on plastic. is any old plastic okay? i thought i would look in the building supplies and see what there is. MDH has said he will cut them however i want. i think he wants to play with his 'toys' to do the cutting. i almost thought , gee, i don't have too much. i have been good after all. for about 3 yrs, i have tried to use whatever i had. but i keep finding folding pieces here and there. LOL one shelving unit is full of bigger pieces.