i want to make a t-shirt quilt but what is interfacing? HELP

[sewcool]

i want top make a quilt with the bunch of knit cotton t-shirts and clothing but i hear in need non stretch interfcaing what is it what kind exactly do i need and where online can i buy it?

does it iron on?

[kaper]

Interfacing (Pellon is a brand name) is usually a nonwoven fabric used to stabilize an area of your sewing project. It will help control the stretch of your t-shirt blocks. It comes both as iron or sewn in type. You can find it in the fabric section of your yards goods store. It comes in various weights or stiffness. You will generally match the weight of your interfacing to the weight of the fabric you are applying it to.