"Over time 505 will dry and break down during washing and if possible will migrate out of the fibers during the wash. However, if you never wash the quilts it will do no harm."
Never wash the quilts? Ok, I can use it on wallhangings. I don't like the "dry and break down during washing" and the "if possible will migrate". If it does not migrate, do you have bits and pieces of dry chunks inside the quilt?
Dayle