Acrylic doesn't block. When you put it in the washer it stretches, when you dry it, it goes back to its original size. Like Aidan said, it may make it look nicer.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry