HotLine high fire primer is a special formulation of alumina and low-fluxing clays developed to withstand the high kiln temperatures required for raking. Contains a dye which burns off when firing. An excellent smooth finish between the glass and kiln shelf. Hi-Fire Shelf Primer is also excellent for coating mandrels for beadmaking.

Mix with water.

Available in 1.5 lb. and 5 lb. containers.