ST430 : Lighter and smoother than 408 or 435. Striking color. Work Hot, cool, reheat. Strong reduction brings out red copper luster. Red webbing can be maintained under encasement. Capable of kiln striking. Resetting some areas with a hot focused flame before annealing will promote kiln striking to purple. Flame striking will promote variegated blues. Encasement combined with kiln striking will promote pinks. Marvering with cold tools will alter color profile.