I love using silk in a quilt - my first quilt was a wholecloth silk. I didn't know any better. I learned a lot - really fast. Like - you really need machingers gloves to grab onto the freakishly slippery stuff. And do NOT iron it....press it gently because it will warp. eek. And yes -
always pre-wash. I was in-setting (is that the word??) many colors of silk dupioni, silk velvet, silk taffeta etc...I didn't want these colors to run all over the cream colored background. So I washed them till the cows came home. I also used 23karat gold leaf (which I adhered to muslin) and washed that. (I am a decorative and fine artist and use gold-leaf a lot in my panels and finishes..I put the stuff wherever I can.) And then I layered silk organza over the colorways to soften them back a bit. The binding was silk satin ribbon. Do you think I used enough silk??
It was for a friend who was in the hospital with leukemia. I wanted it to be lightweight but warm and full of shades of her favorite colors.
Anyway - for all the hair-pulling and do-overs I was very happy with how it turned out - and I would do it again. I was inspired by a design of Yoshiko Jenzenji's. Never-mind the fact that she does her work on a long-arm...I figured "well, I paint 10 foot murals on canvas - how hard can it be?"
doh. sewing a 7 ft. by 7ft. wholecloth on a domestic machine was um...challenging. I finally figured that if I stacked every book in the house on the dining room table around my sewing machine to make a level surface it was so much easier - it wasn't sliding off the sides of the table all the time. And I learned how to throw it over my shoulder, etc. All the things you gals already know how to do!
Silk is worth the extra work.