--- product_id: 1871175 title: "Smooth-Cast 300 - Bright White, Ultra Low Viscosity Liquid Plastic - Pint Unit" brand: "smooth-on" price: "243 zł" currency: PLN in_stock: true reviews_count: 13 category: "Smooth On" url: https://www.desertcart.pl/products/1871175-smooth-cast-300-bright-white-ultra-low-viscosity-liquid-plastic store_origin: PL region: Poland --- # Ultra-fast 10 min cure time Bright white, paint-ready finish Ultra-low 80 cps viscosity Smooth-Cast 300 - Bright White, Ultra Low Viscosity Liquid Plastic - Pint Unit **Brand:** smooth-on **Price:** 243 zł **Availability:** ✅ In Stock ## Summary > ⚡ Cast Fast, Finish Flawless — Be the Maker Everyone Envies! ## Quick Answers - **What is this?** Smooth-Cast 300 - Bright White, Ultra Low Viscosity Liquid Plastic - Pint Unit by smooth-on - **How much does it cost?** 243 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/1871175-smooth-cast-300-bright-white-ultra-low-viscosity-liquid-plastic) ## 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 - • **Pro-Level Finish:** Bright white resin delivers a clean, professional look that’s ready for customization and display. - • **Durable & Machinable:** Shore 70D hardness ensures tough, long-lasting parts that you can sand, machine, and paint. - • **Mix & Mold in Minutes:** 1:1 volume mix ratio with a quick 3-minute pot life keeps your workflow seamless and efficient. - • **Bubble-Free Brilliance:** No vacuum degassing needed—achieve flawless, bubble-free castings every time. - • **Versatile Compatibility:** Works perfectly with glass, metal, plastic, stone, and wood molds for limitless creative freedom. ## Overview Smooth-Cast 300 is a professional-grade, ultra-low viscosity liquid plastic resin that cures in just 10 minutes to a bright white, durable Shore 70D finish. Its 1:1 mix ratio and no-need-for-vacuum degassing formula make it ideal for fast, bubble-free castings compatible with a wide range of mold materials. ## Description Smooth Cast 300 is a liquid plastic ,ultra-low viscosity casting resin that yields castings that are bright white and virtually bubble-free. Vacuum degassing is not necessary. It offers the convenience of a one to one mix ratio (by volume). 3 minute pot life: 10 minute demold time: Mixed viscosity 80 cps: 70D shore hardness Fully cured castings are tough, durable, machinable and paintable. Read MSDS before use - Adult Supervision Required. Keep Out of the Reach of Children - for more information visit www.smooth-on.com ## Features - Ultra-low viscosity casting resin with bright white color - Vacuum degassing is not necessary to yield castings that are virtually bubble free. - Pot Life: 3 minutes; Cure Time: 10 minutes - Shore 70D - Mix Ratio: 1A: 1B by Volume ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004BN7G0E | | Best Sellers Rank | #12,816 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #128 in Sculpture Molding & Casting Products | | Brand | Smooth-On | | Brand Name | Smooth-On | | Compatible Material | Glass, Metal, Plastic, Stone, Wood | | Customer Reviews | 4.7 out of 5 stars 1,314 Reviews | | Grit Material | Plastic | | Grit Material Type | Plastic | | Grit Number | 300 | | Grit Type | Fine | | Item Dimensions | 7.4 x 6 x 3.1 inches | | Item Type Name | Casting Resin | | Item Weight | 2 Pounds | | Item dimensions L x W x H | 7.4 x 6 x 3.1 inches | | Manufacturer | Smooth-On, Inc. | | Material | Plastic | | Material Type | Plastic | | Model | 47641 | | Number of Items | 1 | | Part Number | 47641 | | UPC | 751635476417 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Smooth-On - **Grit Material:** Plastic - **Grit Type:** Fine - **Item dimensions L x W x H:** 7.4 x 6 x 3.1 inches - **Material:** Plastic ## Images ![Smooth-Cast 300 - Bright White, Ultra Low Viscosity Liquid Plastic - Pint Unit - Image 1](https://m.media-amazon.com/images/I/81gwmekNnqL.jpg) ![Smooth-Cast 300 - Bright White, Ultra Low Viscosity Liquid Plastic - Pint Unit - Image 2](https://m.media-amazon.com/images/I/71ZWTS1-Q2L.jpg) ![Smooth-Cast 300 - Bright White, Ultra Low Viscosity Liquid Plastic - Pint Unit - Image 3](https://m.media-amazon.com/images/I/81ubKEjBDDL.jpg) ![Smooth-Cast 300 - Bright White, Ultra Low Viscosity Liquid Plastic - Pint Unit - Image 4](https://m.media-amazon.com/images/I/71Koo4ru1vL.jpg) ![Smooth-Cast 300 - Bright White, Ultra Low Viscosity Liquid Plastic - Pint Unit - Image 5](https://m.media-amazon.com/images/I/71LJ0Lk-VZL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can I add glitter to this?** A: I've used 325 with glitter pigments, and it works very well. You'll have to add a decent amount of glitter and it will take longer to cure. **Q: Can I use this to cast a dome-shaped mask using a silicone mold? Will it stay liquid long enough for me to tilt it back & forth to form an even coat?** A: Smooth-Cast 300 is a snap cure material - a better choice may be Smooth-Cast 325 or Smooth-Cast 65D, both of which have a gradual cure profile. **Q: is it machinable?** A: Yeah, to an extent. I’ve taken a dremle tool to casted plastic to sand down parts and remove unwanted flashing that occurs. It’s pretty tough stuff, let it cure for a day or two before sanding or working on thinner areas, but I’ve even taken a hacksaw to some castings and they have held up just fine. **Q: Is this a silicone or a urethane?** A: This is a urethane casting resin. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by N***X on December 16, 2023* ### ⭐⭐⭐⭐⭐ Review *by M***E on December 13, 2025* ### ⭐⭐⭐⭐⭐ Review *by V***E on October 15, 2025* ## Frequently Bought Together - Smooth-Cast™ 300: Bright White, Low Viscosity, Liquid Plastic Casting Resin - Pint Unit - Smooth-On Mold Star™ 16 Fast Platinum Silicone Rubber, Silicone Mold Making Kit - Pint Unit - Smooth-On Universal Mold Release - 14 Fluid Ounce Aerosol Can --- ## 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.pl/products/1871175-smooth-cast-300-bright-white-ultra-low-viscosity-liquid-plastic](https://www.desertcart.pl/products/1871175-smooth-cast-300-bright-white-ultra-low-viscosity-liquid-plastic) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-08*