Home > Listing of Enamels > Milton Bridge EnamelClick Image To View Larger P-15 Poppy (op) $7.50 Weight 1 oz. ($7.50) 3549:=:7.5 Quantity: - + Opaque, cataloged, Blythe 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. Enamel is 80 mesh and lead bearing.