Separators

Separators prevent glass from sticking to kiln shelves and molds during firing—protecting your kiln furniture and preserving clean, finished surfaces. Used correctly, they are essential for reliable fusing, slumping, and casting.

Applied between glass and shelf, separators create a controlled release layer that allows glass to soften and move without bonding to the surface beneath it. Options range from thin, disposable shelf papers for smooth fuse work to fiber and rigid separators for slumping, drop-outs, and casting. Each type balances release, durability, texture, and ease of cleanup.

Choosing the right separator—and applying it properly—directly affects shelf life, surface quality, and firing consistency. Whether you’re prepping for everyday fusing or dialing in a demanding kiln load, dependable separation is what keeps your work clean, predictable, and repeatable.