Smooth-On Mold Star 15, 16 & 30 – 1 Gallon Kit 7.26kg – 8.16kg

$313.50$338.80 inc GST ($285.00 - $308.00 ex GST)

Smooth-On Mold Star Gallon Series is suitable for medium to large projects. This easy to use platinum silicon rubber is available in a variety of hardnesses and cure times. Allowing you to easily create molds for your projects.

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Smooth-on Mold Star is suitable for a range of projects. Whether you need to create a mold to cast wax, gypsum, resins, concrete and other materials it’ll work perfectly for your project every time. It’s also suitable for casting low-temperature melt metal alloys.

Mold Star mold rubbers are easy to use platinum silicones. Available in a variety of cure times and hardnesses to suit your project requirements. Offering one-to-one mix ratio without the need for scales. It’s also low viscosity and most applications don’t need vacuum degassing.

Mold Star silicone cure to soft, strong rubbers which are tear-resistant and show minimal long term shrinkage. They’re designed to last and won’t deteriorate over time. Add it to your mold library and create sturdy molds that will last for 1000’s of casts. Easily replicate your creations using Mold Star.

Bring your project to life with ease using Smooth-on Mold Star.

Why Choose Smooth-On Mold Star Platinum Silicone Rubber?

  • Easy to use 1:1 mix ratio by volume & weight
  • Low viscosity
  • No vacuum degassing required
  • Fast cure time
  • Multiple hardnesses available
  • Heat resistant up to 450°F (232°C)
  • Tear-resistant
  • Low long-term shrinkage

Choose the specific hardness level from the dropdown menu to meet your unique needs.

Mold Star 15 Gallon Kit

Mold Star 15 Gallon is a slower material offering:

  • 15 A Hardness
  • 50 Minute Pot Life
  • 4 Hour Cure Time
  • Colour: Green
  • Low Viscosity
  • No Vacuum Degassing Required
  • Use in Ventilated Area

Mold Star 16 Gallon Kit

Smooth-on Mold Star 16 is a faster material offering:

  • 16 A Hardness
  • 6 Minute Pot Life
  • 30 Minute Cure Time
  • Colour: Blue-Green
  • Low Viscosity
  • No Vacuum Degassing Required
  • Use in Ventilated Area

Mold Star 30 Gallon Kit

Mold Star 30 Gallon is a harder material offering:

  • 30 A Hardness
  • 45 Minute Pot Life
  • 6 Hour Cure Time
  • Colour: Blue
  • Low Viscosity
  • No Vacuum Degassing Required
  • Use in Ventilated Area


Our Mold Star Gallon Kits are perfect if you are working on medium to larger projects. If you’re working on a small project we recommend you purchase a Mold Star Trial Kit. Or if you’re working on larger projects purchase a Mold Star 5 Gallon Kit.

Note: This product will not work with modeling clays containing sulfur under any circumstances, even if sealed. Also, THI-VEX is NOT compatible with Mold Star rubbers.


Weight 8 kg
Mold Star Series

15, 16, 20T, 30, 31T

  1. Minh (verified owner)

    Good product, and great service!

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