Eastwood Aluminium Prep cleans and etches aluminium surfaces prior to welding, painting or polishing. Cleans and Restores Bare Aluminium Removes Stains and Brightens Surfaces Preps Surfaces Prior To Welding Powerful oxidizers return aluminium to its original lustre. Effectively removes stains, corrosion and will brighten any aluminium surface, thus restoring the surface to look new. Ideal for use on all bare aluminium such as panels, tubing, extrusions, wheels, intake manifolds, marine applications, aeroplanes and more.   Application: To Clean Aluminum: remove any residual contaminents with a mild solvent Like PRE Painting Prep. Apply Aluminum Prep leberally to surface to be cleaned, let penetrate for 3-5 minutes. Wipe off with a clean cloth. Repeat until desired finish is acheived. To Prep for Welding: Follow same procedure as above and use a stainless steel wire brush to abrade the weld surfaces prior to welding.