The first consumable every new kiln owner buys after the furniture kit. Brushed onto the top of each shelf before firing, it keeps glaze drips from bonding work to the shelf and protects floor elements from glaze that would otherwise fuse to the coil and shorten their life. AMACO's listing states that it prolongs shelf life, makes drippings easy to remove and is ACMI certified non-toxic to ASTM D-4236; it gives no maximum cone rating, so check the carton against your firing range. Product name and ASIN verified 1 August 2026.