Osborn C3570 Green Polishing Compound is a good choice for aluminum and stainless steel finishing. This buffing compound is typically used for final finish work, and will produce a mirror finish and very high color. C3570 polishing compound has a high grease content ensuring smooth application and usage. Ideal for aluminum and stainless steel polishing. Effective for final finishing work. Perfect for achieving a mirror finish on aluminum and stainless steel. Best used with domet flannel buffing wheels or untreated cloth wheels. What is the purpose of using C3570 Green Polishing Compound? The purpose of using Osborns green polishing compound is to produce a mirror finish and very high color to aluminum and stainless steel metals. What materials can Osborn C3570 be used on? This green buffing compound is generally used on aluminumand stainless steel metals.