Important Announcement

Reynolds-Chicago is not open for pickup today. Please reach out to us with any questions on our Contact Us form.

Holiday Notice - Christmas

Reynolds Advanced Materials will be closed Wednesday 12:00PM - Saturday, December 24th - 27th in observance of Christmas. Resuming normal operations on Monday, December 29th.

Holiday Notice - New Year's

Reynolds Advanced Materials will be closed Thursday - Saturday, January 1st - 3rd in observance of New Year's Day. Resuming normal operations Monday, January 5th.

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.

Smooth Cast 320 series Smooth Cast 320 series
Free shipping
Free Shipping on qualifying items
See details
  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.
    Free Shipping
    Smooth-Cast 320 - Trial Size
    Net Weight: 1.9 lbs
    $24.17
    Free Shipping
    Smooth-Cast 320 - 1 Gallon Unit
    Net Weight: 15.4 lbs
    $119.22
    Smooth-Cast 320 - 5 Gallon Unit
    Net Weight: 77 lbs
    $477.83
  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
    Free Shipping
    Smooth-Cast 321 - Trial Size
    Net Weight: 1.9 lbs
    $24.00
    Free Shipping
    Smooth-Cast 321 - 1 Gallon Unit
    Net Weight: 15.4 lbs
    $120.99
    Smooth-Cast 321 - 5 Gallon Unit
    Net Weight: 77 lbs
    $488.04
  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
    Free Shipping
    Smooth-Cast 322 - Trial Size
    Net Weight: 1.9 lbs
    $24.16
    Free Shipping
    Smooth-Cast 322 - 1 Gallon Unit
    Net Weight: 15.4 lbs
    $119.26
    Smooth-Cast 322 - 5 Gallon Unit
    Net Weight: 77 lbs
    $477.73

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.

Play Video

Play Video

Play Video

Play Video

Play Video