That is the question of the day. About four years ago, I began pre-washing all of my fabric before piecing the quilts and other projects. However, I know there are others who do not wash any of the fabric until after everything is pieced together. My fear is that if I don't wash fabric until after piecing then the fabric may shrink to the point of distorting the end result. But I don't know how likely that is with contemporary technology and I do like the puckered look of older quilts.
What do you do and why?