Not related to pressing, but wide backing...at the LQS wide backing yardage is torn rather than cut. This means the piece is now torn on grain and will be straight on the LA, thus straight on your quilt. LA'er here does not prewash, but mists with water as QuiltBaer mentions. Those new mister bottles work great as they have such a fine overall spray.
Personally I prewash and have manhandled the backing at the ironing board in the past, but now that I have a LA of my own, I may just mist the backing when I'm ready. I will still prewash...like how Macybaby does it
