--- product_id: 22727565 title: "THI-VEX - Thixotropic Agent for Thickening Smooth-On Silicone Rubbers - 1 Ounce Bottle" brand: "smooth-on" price: "€ 12.61" currency: EUR in_stock: true reviews_count: 12 category: "Smooth On" url: https://www.desertcart.it/products/22727565-thi-vex-thixotropic-agent-for-thickening-smooth-on-silicone-rubbers store_origin: IT region: Italy --- # Ideal for vertical brush-on molds Precision thickening control Ultra-concentrated, small dose needed THI-VEX - Thixotropic Agent for Thickening Smooth-On Silicone Rubbers - 1 Ounce Bottle **Brand:** smooth-on **Price:** € 12.61 **Availability:** ✅ In Stock ## Summary > 🖌️ Elevate your mold game—thicken smarter, not harder! ## Quick Answers - **What is this?** THI-VEX - Thixotropic Agent for Thickening Smooth-On Silicone Rubbers - 1 Ounce Bottle by smooth-on - **How much does it cost?** € 12.61 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/22727565-thi-vex-thixotropic-agent-for-thickening-smooth-on-silicone-rubbers) ## 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 - • **Trusted by Creators:** Highly rated by pros for reliable thickening and superior mold quality. - • **Seamless Integration:** Mixes thoroughly with Smooth-On silicones (except Mold Max 40/60) for consistent results. - • **Brush-On Mold Specialist:** Engineered for flawless vertical applications without drips or waste. - • **Minimal Usage, Maximum Impact:** Just a few drops transform your silicone’s texture—economy meets efficiency. - • **Customizable Viscosity Mastery:** Adjust thickness effortlessly to perfect your mold coats. ## Overview THI-VEX is a premium thixotropic agent designed to thicken Smooth-On silicone rubbers for brush-on mold applications. With precise viscosity control using minimal amounts, it prevents drips on vertical surfaces and enhances mold quality. Compatible with most Smooth-On silicones except Mold Max 40 and 60, it’s a must-have for professional mold makers seeking efficiency and flawless results. ## Description THI-VEX is made especially for thickening Smooth-On silicones for vertical surface application (making brush-on molds). Different viscosities can be attained by varying the amount of THI-VEX. THI-VEX is added as a percentage of Part A and must be thoroughly mixed with Parts A and B. THI-VEX will not work with Mold Max 40 or Mold Max 60 silicones. Review: Excellent for thickening Rebound 40 - Phenomenal stuff! Used to make a mold with Smooth on rebound 40. My first two coats without thi-vex leaked all over the table, last coat put just 3-4 drops in and stirred for a couple minutes and thickened it perfectly, last coat stayed put and didn’t waste material…excellently stuff!!! Review: Careful. Very strong. - Use sparingly, a little goes a long way. If you see with dragon skin, start with one or two drops as it shortens cure time. Haven't used it 3nough to talk about durability but the company is know for its amazing products, so I wont doubt this one. ## Features - Thickening Liquid For Silicone Rubber - Thickens Smooth-On Silicones - Use For Making Brush-On Molds - Only a Small Amount Is Needed ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01ACABSC6 | | Best Sellers Rank | #22,427 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #137 in Cooking & Baking Thickeners #253 in Sculpture Molding & Casting Products | | Brand Name | Smooth-On | | Color | Clear | | Compatible Material | Rubber | | Container Type | Bottle | | Customer Reviews | 4.7 4.7 out of 5 stars (415) | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Weight | 27.22 g | | Manufacturer | Smooth-On, Inc. | | Material Type | Silicone | | Model | 43216-54379 | | Other Special Features of the Product | Thixotropic, Adjustable Viscosity | | Specific Uses For Product | Casting | | UPC | 751635839205 | | Viscosity | hochviskos | | Volume | 1 Fluid Ounces | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** Smooth-On - **Item Form:** Liquid - **Material:** Silicone - **Special Feature:** Thixotropic, Adjustable Viscosity - **Specific Uses For Product:** Casting ## Images ![THI-VEX - Thixotropic Agent for Thickening Smooth-On Silicone Rubbers - 1 Ounce Bottle - Image 1](https://m.media-amazon.com/images/I/41otcWX7hrL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is this a good thickener for use with alumilite quick set rtv silicone?** A: The Thi-Vex is normally used to thicken brush-ons like the rebound 25 silicone which checks its tendency to flow especially when the object being molded is in the vertical. The alumilite quickset silicone is not a brush on silicone. It is meant for pouring and therefore does not need the thi-vex thickener. If you make it thicker, it will be difficult for it to copy very intricate features.I hope this helps. **Q: Will this work with Mold Maker by Alumilite?** A: We don't test Thi-Vex with non-Smooth-On silicones. **Q: Part A of my smooth-on got hard, can i use this with only part B to make a mold?** A: No, that won't work **Q: Can I use this with OoMoo30?** A: It will work for OoMoo30, but I had much better results using rebound 25 with the thivex ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent for thickening Rebound 40 *by A***R on November 17, 2025* Phenomenal stuff! Used to make a mold with Smooth on rebound 40. My first two coats without thi-vex leaked all over the table, last coat put just 3-4 drops in and stirred for a couple minutes and thickened it perfectly, last coat stayed put and didn’t waste material…excellently stuff!!! ### ⭐⭐⭐⭐⭐ Careful. Very strong. *by I***S on September 18, 2025* Use sparingly, a little goes a long way. If you see with dragon skin, start with one or two drops as it shortens cure time. Haven't used it 3nough to talk about durability but the company is know for its amazing products, so I wont doubt this one. ### ⭐⭐⭐⭐⭐ Where has this been all my life?!? *by P***E on December 14, 2024* Thinking of how much silicone I’ve wasted from dripping off molds, this definitely does the job! Add a few small squirts (depending on amount of silicone) and stir for 2 minutes till you decide to add more. It’s amazing for mold making! I’ve made my silicone as thick as Vaseline and it goes on so smooth and thick, not wasting silicone and hours of having to pour more silicone to build up the mold. ## Frequently Bought Together - THI-VEX - Thixotropic Agent for Thickening Smooth-On Silicone Rubbers - 1 Ounce Bottle - Rebound 25 - Brushable Platinum Silicone Rubber - Gallon Unit - Ease Release 200 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.it/products/22727565-thi-vex-thixotropic-agent-for-thickening-smooth-on-silicone-rubbers](https://www.desertcart.it/products/22727565-thi-vex-thixotropic-agent-for-thickening-smooth-on-silicone-rubbers) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-10*