I need to know how to tell if my flannel
fabric is 100% cotton or not. I want to make a bed warmer
that can be heated in the microwave.
Welcome to the Quilting Board!

I need to know how to tell if my flannel
fabric is 100% cotton or not. I want to make a bed warmer
that can be heated in the microwave.
This site tells how to tell the fabric content by a burn test:
http://reviews.ebay.com/Fabric-Guide...00000001271782
Thanks much Dunster, I'll check out the site.
Most flannel is 100% cotton. You can check the bolt when you shop, but I don't recall seeing blends in printed flannel, only in woven plaids.