sandwiching and thread-basting (I hand-quilt) is so bad, everytime I have to do anything larger than a wall-quilt, I end up in pain-and sometimes, tears from doing it on the floor. I HATE IT! I got a full sheet of plywood several years ago and taped the edges and got some big plastic bull clips to anchor it and except the bending over it, it works really well. The problem sometimes is when it is a queen or so, I have to keep shifting the sandwich to get to another section to baste and risk getting a wrinkle to two in the backing. I couldn't take that board with me when I moved back to the U.S. and haven't replaced it yetproblem being I don't have the room for it now!! I got on the floor earlier this week to baste a Xmas tree skirt and I'm still feeling the effects!! I HATE IT, HATE IT, HATE IT SO MUCH, each time I wonder why I keep doing it! Then when the pain goes away, I remember why!!