Well let me tell you I made an emergency one. I had the opportunity to go to a quilt retreat but I only had 2 hours notice. I asked my husband for a piece of plywood about 18x18. I took and old towel, doubled it and duck taped it to the back of the board. Then I took an old pillowcase and shoved the towel covered board into the pillowcase and folded the excess around the back and taped that down with duck tape too. Well, that thing is AWESOME!! Not fancy but it works like a charm and I use it all the time now.