Colour Sanding Machine

Color sanding and buffing by carl brunson.(3000 is used in the 3m machine color sanding system) to take out the 1500 grit scratches.3000 is pricey stuff.If you cant bum a used piece of 3000 from a paint shop, you are stuck with using 2000 grit to get the 1500 grit scratches out.When color sanding by hand, i try to keep my sanding.