There are few crafting materials softer than felt. This fuzzy material provides a cosy texture to any craft project. Unfortunately, floppy felt clippings aren't always easy to work with. If you're using felt on a rigid item, you can stiffen the felt for easier usability. According to the book "Finishing the Figure: Doll Costuming, Embellishments, Accessories," craft stores sell commercial felt stiffeners, but you can also make your own stiffened felt with basic household items. (See Reference 1, page 79)
Cut your felt to the right size using scissors or fabric shears. Stiffened felt is tougher to cut than untreated felt fabric, so it's best to cut it to size before stiffening.
Mix together a solution of water and fabric glue in equal parts. (See Reference 1, page 79)
Dip the felt into the water and glue mixture, fully saturating the fabric.
Wring out the felt. You want the felt to be damp, but not dripping wet. (See Reference 1, page 79)
Place the felt around a foam core or other object if you want it to stiffen in a specific shape. Since the felt is damp but not dripping with the glue mixture, it won't stick to the foam as it dries. You can also hang it on a clothesline if you want it to stiffen as a flat sheet. Wait for the felt to dry. In just a few hours, the felt will be stiff and ready for use with your craft project.