--- product_id: 48207962 title: "Smooth-On Mold Star 30 Mouldmaking Silicone Rubber - Trial Unit" brand: "smooth-on" price: "SAR 385" currency: SAR in_stock: true category: "Smooth On" url: https://www.desertcart.com.sa/products/48207962-smooth-on-mold-star-30-mouldmaking-silicone-rubber-trial-unit store_origin: SA region: Saudi Arabia --- # 45 min pot life Heat resistant to 450°F 30A Shore hardness Smooth-On Mold Star 30 Mouldmaking Silicone Rubber - Trial Unit **Brand:** smooth-on **Price:** SAR 385 **Availability:** ✅ In Stock ## Summary > 🛠️ Mold like a pro, cast like a visionary! ## Quick Answers - **What is this?** Smooth-On Mold Star 30 Mouldmaking Silicone Rubber - Trial Unit by smooth-on - **How much does it cost?** SAR 385 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/48207962-smooth-on-mold-star-30-mouldmaking-silicone-rubber-trial-unit) ## Best For - smooth-on enthusiasts ## Why This Product - Trusted smooth-on brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Optimized Workflow:** 1:1 mix ratio and 45-minute pot life give you ample time to work without rush or waste. - • **Effortless Precision:** Platinum silicone formula captures every detail flawlessly for professional-grade molds. - • **Versatile Casting Power:** Perfectly compatible with wax, gypsum, resins, concrete, and more—expand your creative horizons. - • **Heat-Resistant Reliability:** Withstands up to 450°F, making it ideal for demanding projects that require thermal endurance. - • **Durability Meets Flexibility:** Soft yet tear-resistant rubber ensures your molds last through countless casts without compromise. ## Overview Smooth-On Mold Star 30 is a premium platinum silicone rubber designed for easy mixing and exceptional durability. With a balanced 1:1 volume mix ratio, a generous 45-minute pot life, and a 6-hour cure time, it produces soft yet strong molds with 30A Shore hardness. Heat resistant up to 450°F and tear-resistant, it’s perfect for casting a wide range of materials including wax, gypsum, resins, and concrete—ideal for professionals seeking reliable, high-detail moldmaking without vacuum degassing. ## Description Smooth-On Mold Star 30 from Smooth-On is an easy to use platinum silicone mold mix that cures to a soft, strong, tear resistant rubber. Mold Star 30 molds will last a long time and good for casting wax, gypsum, resins, concrete and more. Cured Mold Star rubber is heat resistant up to 450 degrees F. Mold Star 30 is harder material than Mold Star 15 & 16 with a 30A Shore hardness. Mixed ratio of1A:1B with a pot life of 45 minutes and cure time of 6 hours. Mold Star does not require vavuum degassing & is not intended for brush on mold making. 1 lb each part A & part B. ## Features - Easy to use platinum silicone mold mix - Cures to a soft, stong, tear resistant rubber - Good for casting wax, gypsum, resins, concrete and more - Harder material than Mold Star 15 and 16 with a 30A Shore hardness - Mix ratio is 1A:1B by volume, pot life 45 minutes & cure time of 6 hours ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00ETAY8RI | | Best Sellers Rank | 734,336 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 2,162 in Sculpting Moulding & Casting | | Brand Name | Smooth-On | | Colour | Blue | | Customer Reviews | 4.6 4.6 out of 5 stars (705) | | Item Dimensions | 19.1 x 15.2 x 7.6 centimetres | | Item Shape | Star | | Item Weight | 1.12 kg | | Manufacturer | Smooth-On | | Manufacturer Part Number | moldstar30 | | Material Type | Silicone | | Model Number | COMINHKR067156 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | UPC | 751635227415 | | Unit Count | 1.0 count | ## Product Details - **Brand:** Smooth-On - **Colour:** Blue - **Item dimensions L x W x H:** 19.1 x 15.2 x 7.6 centimetres - **Material:** Silicone - **Shape:** Star ## Images ![Smooth-On Mold Star 30 Mouldmaking Silicone Rubber - Trial Unit - Image 1](https://m.media-amazon.com/images/I/81MxIlm4+KL.jpg) ![Smooth-On Mold Star 30 Mouldmaking Silicone Rubber - Trial Unit - Image 2](https://m.media-amazon.com/images/I/51T2q6qWgOL.jpg) ![Smooth-On Mold Star 30 Mouldmaking Silicone Rubber - Trial Unit - Image 3](https://m.media-amazon.com/images/I/512V7irGlaL.jpg) ![Smooth-On Mold Star 30 Mouldmaking Silicone Rubber - Trial Unit - Image 4](https://m.media-amazon.com/images/I/51bhvf52MhL.jpg) ![Smooth-On Mold Star 30 Mouldmaking Silicone Rubber - Trial Unit - Image 5](https://m.media-amazon.com/images/I/51XF0B1ZVML.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: whats the difference between oomo 30 and moldstar ?** A: OOMOO 30 has a Shore hardness rating of 00-30, which is about as squishy as a gel shoe insert. Moldstar 30 is a hardness of Shore A-30, which is closer to pencil eraser hardness. It’s confusing, but there are 2 Shore hardness scales and a 30 on one is very different from a 30 on the other. In the description when it talks about hardness, pay attention to whether it says Shore A or Shore 00. **Q: What color is this silicone? Can I use mica powders to color it** A: It is blue when mixed, and very opaque, so I doubt powders will be able to color it much if at all. If you're looking to label your molds, I've 3D printed mirrored text using a raft, and set it into the mixed material. It floats, and pulls away cleanly once the material is cured. If you want a platinum cure 2 part silicone around shore-A 30 you can color, I might suggest DragonSkin 30 or Platsil Gel-25. **Q: Hi. i've made a wax mold of a small animal bone using this silicone method. i'm curious if i can use clay as well. i'm looking to make jewelry..** A: On Smooth On's website it states that this line of mold will not work with modeling clays that contain sulfur. Their website was very helpful and has lots of information: http://www.smooth-on.com/Silicone-Rubber-an/c2_1115_1341/index.html **Q: Is this food safe?** A: No. Smooth On does however make a food safe silicone called Smooth -Sil 940 ## Frequently Bought Together - Smooth-On Mold Star 30-1A:1B Mix by Volume Platinum Silicone Rubber - Pint Unit - Smooth-On Universal Mold Release - 14 Fluid Ounce Aerosol Can - Smooth-Cast™ 300: Bright White, Low Viscosity, Liquid Plastic Casting Resin - Pint Unit --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.sa/products/48207962-smooth-on-mold-star-30-mouldmaking-silicone-rubber-trial-unit](https://www.desertcart.com.sa/products/48207962-smooth-on-mold-star-30-mouldmaking-silicone-rubber-trial-unit) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-11-06*