Smooth-Cast™ 300
Fast Set Bright White Resin
The Smooth-Cast™ 300 Series of liquid plastics are ultra-low viscosity casting resins that yield castings that are bright white and virtually bubble free. Vacuum degassing is not necessary. They offer the convenience of a 1A:1B by volume or 100A:90B by weight mix ratio. The differences between them are pot life and demould time.
![Smooth-Cast™ 300 - Fast Set Bright White Resin](https://www.benam.co.uk/pub/media/catalog/product/s/m/smooth-cast-300-combo-533x400.jpg?width=533&height=400&store=bam_view&image-type=image)
Quick Tech Data
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1A:1B
Mix Ratio By Volume
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100A:90B
Mix Ratio By Weight
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3 minutes
Pot Life
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10 minutes
Cure Time
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70 D
Shore Hardness
These resins readily accept fillers (such as URE-FIL™ 3 from Smooth-On) and can be colored with SO-Strong™, UVO™ or Ignite™ colour tints (Smooth-Cast™ 325 series accepts pigments better than the Smooth Cast™ 300 series). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast™ 300 Series Liquid Plastics include reproducing small to medium size sculptures, making prototype models, special effect props and decorative jewelry.
![Smooth-Cast™ 300 - Fast Set Bright White Resin](/pub/media/catalog/product//s/m/smooth-cast-300-hero-new_1_1__1_.png)
Videos
![](https://i.ytimg.com/vi/4l8v-c3U1t4/maxresdefault.jpg)
Fake Food Challenge - Molding and Casting Broccoli?
![](https://i.ytimg.com/vi/iu7vpoIolJ8/mqdefault.jpg)
How To Cast Resin Using Smooth-Cast® 300 White Urethane Plastic
![](https://i.ytimg.com/vi/bWUre5qPhKI/mqdefault.jpg)