Craft Resin

CRAFT RESIN Mold Making Silicone 30A 8.8lb | Liquid Rubber For Molds

CRAFT RESIN Mold Making Silicone 30A 8.8lb | Liquid Rubber For Molds - Main image
$41.99 $59.99 In stock

Category: Silicone Rubber

Craft Resin Silicone 30A is a firmer platinum-cured liquid silicone rubber for mold making and casting. It is designed for projects that need strength, shape retention, and clean detail across repeated pours.

  • Easy 1:1 mix by weight - simple to measure, mix, and pour for smooth, consistent results with less mess and less guesswork.
  • Low-viscosity formula - flows into details and helps reduce trapped bubbles for cleaner surfaces and more accurate molds.
  • Firm 30A silicone for strong, shape-stable molds - ideal for projects that need more structure, better support, and dependable shape retention.
  • High-detail reproduction - captures textures, edges, and fine features for clean, professional-looking results.
  • Fast room-temperature cure - cures in around 4 hours, helping you move from mold making to casting faster.
  • Low-odor, food-safe formula - more comfortable to use indoors and versatile across a wide range of mold making applications.
  • Ideal for resin, soap, candles, and DIY projects - a great choice for casting work where durability, detail, and repeated use matter.

The 4kg 2 part liquid silicone rubber is ideal for larger casting projects

Customer Reviews (4.7 / 5 · 25 reviews)

Matthew ★★★★★

Used this to make a mold of a small statue and the detail transfer was spotless, even the tiny grooves came out crisp. The firmness of the 30A meant I could demold early without any warping, and it held its shape perfectly through three castings so far.

Kevin ★★★★★

I was nervous about air bubbles ruining my first mold, but this platinum-cured silicone poured so smoothly that I didn't need a vacuum chamber. The 30A firmness held every tiny detail of my prototype across three casts without any tearing, which surprised me for an 8.8lb batch.

Lucy D. ★★★★★

The firm 30A shore hardness is exactly what I needed for detailed coasters—the edges stay crisp even after the tenth pour. It's easy to mix and degasses quickly, so I didn't have to babysit it for long.

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