Use 3M 320 Open Coat Sand Paper when sanding EkoFill, EkoPrime, and EkoPoly. This product is intended for dry sanding only. It cuts fast, does not load up, leaves no residue and provides consistent results.  Do not skimp on sanding materials and discard when they become dull.

(We recommend using red ScotchBrite on the sensitive areas such as pinked edges, rib stitching, and rivet heads.)