A refractory material that may resemble paper, felt or fiber mat.
Fiber paper has countless uses when fusing glass including kiln-carving and as a separator between glass and shelves and/or damns.
Fiber paper usually has an organic binder that allows it to be handled and cut easily. The binder burns away when fired, leaving a softer, cotton-like material.
Fiber paper comes in several thicknesses and is most readily available 1/16 and 1/8 inch thick