Prewash fabric or not?
Hiya All, I am working on a tee shirt quilt, mosaic style. I am going to start adding in small squares to fill the gaps on the top layer. I'm using the same fabric that I am for the backing. Do I need to prewash the fabric? I am planning on doing a combo quilting [sitch in the ditch] + tying. My batting says 10". I have a few squares larger than 10 inches but I don't want to quilt through the patterns [Harley Davidson] of the shirts. I think I bought Calypso brand fabric, so probably 100% cotton. Thanks.