I'm weaving honeycomb structure with 10/2 Perle cotton and rayon chenille - 2,400 yd.per pound. The rayon is color fast, but I've read that you should only dry clean rayon. I'd really like to wet wash the fabric for fulling after taking it off the loom, but I don't want to ruin it after putting in so much work. Does anybody know if it would be OK to wet wash rayon just once for finishing?