Home > Listing of Enamels > Vintage EnamelClick Image To View Larger 155 Orange (op) Out of Stock! $0.00 Weight 1 oz 8 ozs 16 ozs 4445:+:0,4444:+:0,4446:+:0 Quantity: - + Opaque, cataloged, Thompson Enamel for Copper, Silver, Gold, Iron and Steel. This enamel is "medium fusing" and should be fired at 1450 to 1550 degrees F. for approximately 2 to 4 minutes. All Enamel is pre-1990, 80 mesh and lead bearing.