Originally Posted by
DOTTYMO
I pre wash at home but sometimes at classes you have to buy fabric when you see it and use immediately and can't wash. Does anyone have any idea how to fit new fabric in with prewashed.
Mixing washed and unwashed fabric is not a problem as far as shrinkage goes as long as you quilt a moderate amount. Once quilted, shrinkage is controlled by the batting. In other words, the fabric cannot shrink more than the batting shrinks. Mixing fabrics would be more of a problem for a tied quilt, especially if the ties are not close together.
If there is concern about potential dye bleeds, do the first wash of the quilt in a machine that uses a *lot* of water (to dilute any bleeds) with hot water and Synthrapol (Synthrapol suspends unset dye particles in water).