I prewash somethings depending on the colour of it... but never if I bought it as a kit....I did that once and will never again. They had fussy cut a block for the kit and when I washed it I had to adjust everything because it wasn't the size anymore.

I have been to classes where the teacher tells you to pre-wash everything and then others that they say don't really I think it is all up to you.

Doesn't the fact that the block changed size when you washed it say something about the fabrics ??????

I was told by a quilting teacher if you wash , wash all fabric in quilt. don't wash some and leave some

I wash all of mine before cutting.

My sister's quilt is the only one i've made from start to finish. I did not pre-wash, but did wash it after i was finished...Delicate, short wash, gentle rinse and hung outside to dry - no dryer...

My aunt's quilt, i also washed, but since she made it in the 50s, and it was a scrap quilt, i assume it was prewashed. Again, gentle wash and hung out to dry.