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Ceramic Fiber

Ceramic fiber (or fibre) is a family of refractory products that are commonly used in the kiln in a variety of forms and shapes.  Most have in common that they resist thermal shock, require pre-firing to burn off a binder, and can be used without a glass separator or kiln wash (unless they've been rigidized).  They also can present a health hazard, and it's a good idea to wear a mask when working with products that contain ceramic fiber.

Some common types are:

Fiber paper -- generally from 1/16" (1.5mm to 1/4" (6mm) in thickness, paper is used to line the kiln shelf in place of kiln wash.  Most paper is textured and can impart that texture to glass when fired.  Paper usually comes in rolls, but is often re-sold in sheet form.  A few papers such as Unifrax's 110-J paper are rigid and will not bend, but most are flexible.

Fiber blanket -- used to line kilns and (when rigidized) as a mold material.  Blanket is usually 1/4" (6mm) to 1" (24mm) thick, is usually sold by the roll,  is available in several different densities.  It is flexible unless rigidized.

Fiber board -- also available in various thicknesses, from 1/2" (12mm) to 3" or more.  Board is rigid and is available in several different densities.  Boards can be used to make molds (especially drop rings) or as a kiln shelf, but they must be well supported or they will warp.

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Copyright 2005 Brad Walker.  All rights reserved.

This list compiled from numerous sources, including the Warm Glass board, manufacturer's materials, and Graham Stone's Firing Schedules for Glass.

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