Sirchie 638CA Aerosol Dust & Dirt Hardener, 15 Ounce Aerosol

This efficient method for preparing footprints and tire tracks found in loose or sandy soil is newly packaged in aerosol form. The 638CA features a quick-drying, clear acrylic formula that adds superior strength to impressions—lessening the chance of detail damage due to the weight of the casting material. Use it with plaster-of-paris, HARD-CORE, or Shake-N-Cast materials. One 15-ounce can of 638CA Dust and Dirt Hardener is enough to make up to 30 full-size adult shoe impression applications.