Tip of the Week: Pre-Washing Fabric
The majority of quilters don't pre-wash fabric for their projects. The high-quality fabric you purchase at quilt shops does not shrink as much or have as much sizing in it as it did in years past. But, it's personal preference and some quilters always wash their fabric before working with it.
If you do pre-wash, be consistent. If you wash part of your fabric wash all of it. If you are mixing fabrics in a quilt top (e.g., regular cotton with batik or flannel) it is probably wise to pre-wash because the different fabrics will likely shrink at different rates. And you may wish to pre-wash if you're making a quilt with, for example, a white or very light background alongside very bright colors.
If you pre-wash, always press your fabric before you begin cutting pieces for your quilt, and use BestPress or another starch or starch-like product to put a bit of crispness back into the fabric. This will make rotary cutting easier and more precise.
A presenter at International Quilt Market last week recommended washing backing fabric (especially wide backs) even if you don't wash the fabric for the quilt top. If you follow this advice, she suggested clipping each corner of the fabric at a 45 degree angle just a bit (about 1/2 inch from each corner). This prevents all of that raveling and balls of thread that you often get when you wash a large piece and have it come out of the dryer in a tangled mess.