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Smooth-Cast 320 Series

Smooth Cast™ 320 series plastics are ultra-low viscosity resins that yield castings that are off-white. Vacuum degassing is not necessary and they offer the convenience of a 1:1 mix ratio. Your fully cured castings are machinable and paintable. Smooth-Cast™ plastics offer tremendous versatility and economy. They are easy to use and you can add different colors and/or fillers for an infinite variety of mind-blowing effects. Perfect for casting detailed models, props and cast effect pieces.

  1. Watch Video
    Smooth-Cast™ 320
    Smooth-Cast™ 320
    Fast-setting off-white low viscosity liquid plastic. 1A:1B by volume mix ratio. 3 minute pot life and 10 minute cure time.
    Trial Size
    $23.44
    1 Gallon Unit
    $115.64
    5 Gallon Unit
    $455.51
    🞩
  2. Watch Video
    Smooth-Cast™ 321
    Smooth-Cast™ 321
    Medium-setting off-white low viscosity liquid plastic. 1A:1B by volume mix ratio. 9 minute pot life and 30 minute cure time.
    WARNING: Prop 65
    Trial Size
    $23.28
    1 Gallon Unit
    $117.35
    5 Gallon Unit
    $465.24
    🞩
  3. Watch Video
    Smooth-Cast™ 322
    Smooth-Cast™ 322
    Slow-setting off-white low viscosity liquid plastic. 1A:1B by volume mix ratio. 15 minute pot life and 4 hour cure time.
    WARNING: Prop 65
    Trial Size
    $23.43
    1 Gallon Unit
    $115.67
    5 Gallon Unit
    $455.41
    🞩

Quick Tech Specs

Smooth-Cast™ 320

  • Mix Ratio By Volume 1A:1B
  • Mix Ratio By Weight 100A:90B
  • Pot Life 3 minutes
  • Cure Time 10 minutes
  • Shore Hardness 70 D
  • Color Off White

Smooth-Cast™ 321

  • Mix Ratio By Volume 1A:1B
  • Mix Ratio By Weight 100A:90B
  • Pot Life 9 minutes
  • Cure Time 30 minutes
  • Shore Hardness 70 D
  • Color Off White

Smooth-Cast™ 322

  • Mix Ratio By Volume 1A:1B
  • Mix Ratio By Weight 100A:90B
  • Pot Life 20 minutes
  • Cure Time 4 hours
  • Shore Hardness 70 D
  • Color Off White

Videos

How-to videos can educate and improve your mold making skills.

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