Rose_P

Does the SO to a fair share of laundry?! How about defining "fair" as "I'll wash and you dry"!

Your quilt is lovely. Very nice arrangement of colors and patterns. I agree that the heat of the dryer will crinkle it better than anything else I can think of, but even without that, it will develop that look over time. They didn't have clothes dryers in the early days when quilts apparently got crinkly with use. Hotter water and more agitation will do it, but might cause problems. I would worry that a radiator could possible scorch it, unless it stays at a level that you can tolerate holding your hand on.

The trouble with using flannel that isn't preshrunk is that it sometimes shrinks a different amount across the grain vs. lengthwise.

I usually prewash unless I'm using pre-cut fabric. I have had the Color Catcher turn very deep pink with the dark red and maroon Kona cotton, but have not seen bleeding on a quilt. Without prewashing I'd probably worry. My quilts all seem to crinkle in spite of the prewashing. I usually use Warm and Natural. As long as the batting will shrink, the quilt will crinkle, and I suspect that the less shrinking the top and backing do relative to the batting, the more crinkles you'll get. If you think about what happens if you stretch elastic while sewing it down, you can picture the effect of the batting getting smaller while the other layers do not, though of course elastic would be an extreme example.

Welcome to QB!