Description
| Unit Size | Net Weight |
| Pint Kit | 1.9 lb |
| Gallon Kit | 15 lb |
| Five Gallon Kit | 75 lb |
Smooth-Cast 325 ColorMatch is a fast-setting resin that was developed specifically for adding color pigments (Smooth-On So-Strong Pigments) and fillers to achieve true color representation or filler effect. The ColorMatch Series is formulated "color neutral".
Properties
Technical Properties
| Mix Ratio by Weight | 115A:100B |
| Mix Ratio by Volume | 1A:1B |
| Pot Life | 2.5 minutes |
| Cure Time | 10 minutes |
| Color | Clear Amber |
| Shore Hardness | 72D |
| Mixed Viscosity | 100 cps |
| Shrinkage | 0.01 in./in. |
| Specific Volume | 1.07g/cc |
| Specific Gravity | 25.9 cu. in./lb. |
| Tensile Strength | 3,170 psi |
| Elongation @ Break | 10% |
| Compressive Modulus | 36,500 psi |
| Tensile Modulus | 140,000 psi |
| Flexural Strength | 3,690 psi |
| Flexural Modulus | 101,000 psi |
| Compressive Strength | 3,500 psi |
| Heat Deflection Temp | 120F |
The Smooth-Cast 325, 326 & 327 ColorMatch Series plastics are fast-cast resins that were developed specifically for adding color pigments and fillers to achieve true color representation or filler effect. The ColorMatch Series is formulated "color neutral". Small amounts of pigment will yield accurate, vivid colors from cured castings using So-Strong tints or Ignite color pigments. The ColorMatch Series offers the convenience of a 1A: 1B mix ratio by volume and has a very low viscosity. Demold times range from about 10 minutes to 2-4 hours (depending on product, mass and mold configuration). Note: Large mass castings will get very hot and shrink more, depending on mold configuration.
The ColorMatch Series also readily accept fillers (such as URE-FIL 3 from Smooth-On). Because of its neutral color, Smooth-Cast 325 is ideal for creating marble and wood grain casting effects, or duplicating the look of real metal by adding bronze, brass or other metal powder (see Smooth-On technical bulletin for metal cold casting). Applications for the ColorMatch Series plastics include making pigmented prototype models or figures, special effect props, reproducing small to medium size sculptures, decorative jewelry, etc.
How do I remove release agent from my cured urethane casting if I want to prime or paint the casting?
Removing a silicone-based release agent from your cured urethane casting is not easy. The most effective way is to sand blast or bead blast the surface of your casting. However, sand blasting removes a micro thin layer of the casting's surface. If not done properly, you can damage or remove fine detail. Soap Wipe or brush the casting with a soap that has high alkali content. Cascade brand dishwashing gel is highly alkaline and also contains baking soda, which is an advantage. Solvents Wipe or brush the casting with Acetone, Toluene, Isopropyl Alcohol or Mineral Spirits.
Important:
Follow all safety precautions when using flammable liquids. You can then prime and paint your casting.
The ColorMatch Series also readily accept fillers (such as URE-FIL 3 from Smooth-On). Because of its neutral color, Smooth-Cast 325 is ideal for creating marble and wood grain casting effects, or duplicating the look of real metal by adding bronze, brass or other metal powder (see Smooth-On technical bulletin for metal cold casting). Applications for the ColorMatch Series plastics include making pigmented prototype models or figures, special effect props, reproducing small to medium size sculptures, decorative jewelry, etc.
How do I remove release agent from my cured urethane casting if I want to prime or paint the casting?
Removing a silicone-based release agent from your cured urethane casting is not easy. The most effective way is to sand blast or bead blast the surface of your casting. However, sand blasting removes a micro thin layer of the casting's surface. If not done properly, you can damage or remove fine detail. Soap Wipe or brush the casting with a soap that has high alkali content. Cascade brand dishwashing gel is highly alkaline and also contains baking soda, which is an advantage. Solvents Wipe or brush the casting with Acetone, Toluene, Isopropyl Alcohol or Mineral Spirits.
Important:
Follow all safety precautions when using flammable liquids. You can then prime and paint your casting.
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