Smooth-On Plasti-Paste Epoxy Gallon Kit

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Plasti-Paste™ EPOXY is an epoxy-based version of Smooth-On’s popular urethane Plasti-Paste™ products. It is a two component, fiber-filled epoxy designed for vertical surface application. Part A is a paste and Part B is a liquid. Mix ratio is 2A: 1B by volume or weight. Pot life is 40 minutes and cure time is 16 hours at room temperature depending on mass. Applying heat can reduce cure time. Mixed material holds a vertical surface without sagging and cures very rigid and strong.

Liquid material can be colored with UVO™ colorants and cured epoxy can be sanded, machined and painted with acrylic enamel paints. This plastic can used as a support shell or mother mold material to reinforce rubber molds during casting. It can also be used for creating themed environments, creating art or special effects. This epoxy is also a powerful adhesive and can be used as a repair material for a variety of industrial applications.


Plasti-Paste™ EPOXY offers some advantages over urethane Plasti-Paste™ products:

  • Material is not affected by moisture.
  • Material has a longer working time for applying over large areas.
  • Cured material is more rigid with less being required for making support shells/mother molds.
  • Higher heat resistance up (160°F / 71°C).
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