URE-FIL™ 17 & 19 pure aluminum pellet fillers can be used with Smooth-On® liquid epoxy and urethane resins to improve thermal conductivity, dimensional stability, reduce shrinkage in large mass castings, etc. These fillers can also be used to add evenly distributed weight to metal cold-castings and to create artistic casting effects.
URE-FIL™ 19 are large grain aluminum pellets (1200 micron). Larger grain pellets will not fill areas of high detail as well as the smaller grain pellets but both pellet sizes can be used together for more uniform filling.
URE-FIL™ 17 & 19 pellets are recommended for use with Smooth-On® liquid epoxy and urethane resins. Pellets need to be thoroughly dispersed into the resin so that they are completely encapsulated. In order to reduce splashing during the mixing process: 1. Dispense pellets into a mixing container, 2. Dispense Parts A + B of resin and mix together thoroughly in a separate container, 3. Pour resin mixture onto dispensed pellets and stir together thoroughly.
Note: Pellets are sharp and should not be handled by bare hands. Exposed pellets can damage/abrade mold surfaces. Therefore, to maximize mold life, pour or brush a gel/face coat layer onto mold surface prior to casting. Allow gel/face coat layer partially cure before backfilling with resin/pellet mixture.
Mix Ratio for Using with Unfilled Resins (by Weight or by Volume):
1 Part Mixed Resin (A + B) + 2 Parts Filler
Mix Ratio for Using with Aluminum Filled Resins (by Weight):
1 Part Mixed Resin (A + B) + 1 Part Filler