I love wool, but admit it does seem to beard a little more than cotton/poly. You didn't say what kind of thread you used, but I find that using a poly thread, like SoFine or Glide, seems to reduce the bearding. Also, I like a thinner thread and a smaller needle. Also, I always use a black bat (yes, wool does come in black but you have to really look for it; or use a Quilters Dream black poly that quilts much like a wool)if the quilt is a dark color.