Great to find someone had already asked the question I had! I have a superwash afghan to block and I'm about to order 2 sets of blocking mats from KP to accomodate it. Didn't want to and then find out it won't block!
You can do anything you want but you can't do everything!
FO: 2nd sock from defunct cable sock pattern saved from years ago... came out great, DD loves
OTH: Stash blanket Giant Granny Square in purples - getting bigger and bigger!