i made the skinny one first, out of premo, i think. i baked it 30 minutes (i think). and as soon as i spiraled it into the 2 layers of the front of my cardigan, it warped out of shape. I made the big one (45 minute bake time) in response to the warpyness of the skinny one, but it stretches the fabric of the knitting out too much. i think i'll re-bake the skinny one to see if i can get it to stiffen up a bit.