Originally Posted by pittsburgpam

It depends on what fabric I'm using. If I am using pre-cuts like a jelly roll I don't pre-wash. If I am using other fabric yardage (usually from the same collection) with the jelly roll, I don't pre-wash it either so they are all the same.

If it's straight yardage I always pre-wash, dry, iron, and starch.

Edited to add... I am working on a Civil War repro quilt and the fabrics are all nice fabrics that I got on eBay, 200 9x11 pieces. I pre-washed all the fabrics (I believe I used 48 of them, maybe more) since I had no indication of what manufacturer or collection they were. I am so glad I did because there were some very obvious differences in the sizes of the washed, dried, starched and ironed pieces. I would have hated to spend months on this quilt (my Avatar pic) and then have all these fabrics shrink differently.