Alvin 24 oz Lab Metal & 16 oz Lab Solvent Kit Putty, Dent Filler & Patching Compound Epoxy Dent filler and patching compound epoxy kit Includes a 24 Oz. can of Lab-metal and a 16 Oz. can of Lab-solvent. Lab-metal is a ready-to-use metal repair putty, dent filler, and patching compound. Lab-solvent is a metal cleaner used to prepare metal surfaces. Lab-solvent can also be used as a thinner for Lab-metal.