[color=blue][b]"Does cotton block?"[/b][/color].... Well I don't know the official answer...but I will tell you my own experience:
I knit two SpringTime 3/4 coats for my graddaughters last year using Elsebeth Lavold's Cotton Patine. I 'blocked' the coats using the "damp towel/leave til bone dry" method...and they came out looking better than when they went under the towels! The blocking seemed to 'set the stitches' and the appearance of the knitting just looked more finished and polished.
A word of caution: lay the knitted pieces face down and apply the towels to the wrong side of the work, and make sure the towels are double rinsed...no laundry soap residue to compromise the cotton's dyeset. Yes, I learned THAT the hard way. :pout: I think the dyes in Cotton Patine are more fragile or susceptible to 'bleaching' from soap residue. I would still block Cotton Patine the same method...but with towels that are used for 'blocking only'...never washed with laundry detergents and rinsed twice.