Is this going to work?
 

I purchased a comforter set because the fabric is perfect for our bedroom. Well, it has thick poly batting that I didn't take into consideration. Hate that. Im going to take it apart, add a sashing in a fabric that is a perfect contrast to make us a duvet cover. The fabric in the comforter I bought is polyester and the fabric I purchased at the quilt shop is 100% cotton. Is there any reason this will not work? Sometime I think I have a great idea but it turns out not so great.

Kathy

Sorry, I don't have a good answer for your question, but had to say, "Thanks for the smile" because your statement about having great ideas that don't turn out so great reminded me of my grandmother. She was very artistic but not necessarily practical--there are still stories of her "remodeling" project where she took a saw to the wall because she wanted an archway into the dining room; and one time where she sawed apart a sofa to try to turn it into a sectional...

I think it will be fine so long as you wash and put both through the dryer first.....poly doesn't really shrink and your cotton might. I've combined the two before - or cotton poly blends when using men's shirts - and it all came out just fine as long as i pre-washed/shrunk.

The poly/cotton blend won't fade as quickly as the 100% cotton, but as for mixing otherwise you should be fine.

I think PennyF is right, as long as you preshrink it should be fine. I hope it turns out like you are wanting :)

I've used poly and cotton together in a quilt and without problems.

This is what happens to me when I start experimenting too.

And remember to keep your iron on poly setting as the cotton setting will be too hot for your poly/cotton

The polyester blend fabric will look good longer and wear longer than 100% cotton.

Rainy day, not working at Camp today, perfect day for this project. Thanks all for your advise. if this turns out as great as I vision I'll post a picture, if I can figure it how to do that!