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Smooth-Cast® 300 – 950g


Smooth-Cast® 300 – 950g


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 demold time.

Smooth-Cast® 300 - (Part A) 500g


48 in stock

Smooth-Cast® 300 - (Part B) 450g


45 in stock

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These resins readily accept fillers (such as URE-FIL® 3 ) and can be colored with SO-Strong® or Ignite® color 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.

Those interested in making roto cast pieces should refer to the Smooth-Cast® 65D technical bulletin.


  • Easy to measure and mix – 1:1 mix ratio by volume – no scale required
  • Low viscosity – captures excellent detail – no degassing necessary
  • Resin cures to a bright white finish

Smooth-Cast® 300 Product Information | Smooth-On, Inc.




Additional information

Dimensions1 × 1 × 1 cm