I prefer two layers of W&N batting and one layer of Insulbrite.

I use one layer of batting BUT. I use two layers of denim and a layer of fabric. Denim, batting, denim, fabric...do not quilt through all layers, leave one layer of denim unquilted as the heat can go throught the holes.

I usually use one layer of cotton batting and one layer of insul-brite. My DD tried to use two layers of insul-brite with a layer of cotton batting and my dear Bernina 1530 started breaking needles. We broke four before I decided it was the thickness of the project that might be creating a problem. I have since dismantled her crazy potholder and pulled one of the layers of insul-brite out. I've tested the machine on regular fabric and she sews fine now. I think she will be okay. No more experimenting for us.

I use a layer of insulbrite, a layer of batting and a layer cut from an old terrycloth dishrag between the fabric sandwich.

I use two of warm and natural with a layer of insulbrite between them.

I use insulbrite.

Insulbrite and a layer of cotton batting.

I recycle old jeans to use with a one layer of cotton batting........works great!

This is very timely Thanks lots of info I needed . Living with my brother all he has is those huge oven mitts. Ok for him but a lot large for my hands and I can't hold anything. . Can't do it today but tomorrow I am making pot holders. Somewhere I have the silver material that is for heat so can use that on the back. And plenty of old towels I can cut up.