--- product_id: 22727565 title: "Smooth-On THI-VEX, Thixotropic Agent for Thickening Silicone, 1 Ounce" price: "82 Lei" currency: RON in_stock: true reviews_count: 13 url: https://www.desertcart.ro/products/22727565-smooth-on-thi-vex-thixotropic-agent-for-thickening-silicone-1 store_origin: RO region: Romania --- # Perfect for vertical brush-on molds Customizable viscosity control Seamless integration with Smooth-On silicones Smooth-On THI-VEX, Thixotropic Agent for Thickening Silicone, 1 Ounce **Price:** 82 Lei **Availability:** ✅ In Stock ## Summary > 🖌️ Elevate your mold game—thicker, smoother, smarter! ## Quick Answers - **What is this?** Smooth-On THI-VEX, Thixotropic Agent for Thickening Silicone, 1 Ounce - **How much does it cost?** 82 Lei with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/22727565-smooth-on-thi-vex-thixotropic-agent-for-thickening-silicone-1) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smooth-On Synergy:** Optimized for Smooth-On silicones, ensuring consistent, reliable thickening every time. - • **Easy Two-Part Mixing:** Simply blend with Parts A and B for a smooth, homogenous mixture ready to perform. - • **Pro-Level Mold Making:** Ideal for brush-on molds, empowering creators to craft detailed, professional-grade silicone projects. - • **Precision Viscosity Mastery:** Adjust thickness effortlessly by varying THI-VEX amounts for flawless mold textures. - • **Vertical Surface Specialist:** Engineered to keep your silicone perfectly thick on walls and vertical applications—no drips, no mess. ## Overview Smooth-On THI-VEX is a premium thixotropic agent designed to thicken Smooth-On silicones for vertical and brush-on mold applications. By adjusting the amount added to Part A, users can customize silicone viscosity for precise control. It mixes seamlessly with Parts A and B, delivering consistent, drip-free performance—perfect for professional mold makers seeking superior texture and workability. Note: incompatible with Mold Max 40 and 60 silicones. ## 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: Thicker = Better! - It works! A few drops, and your silicone will be thicker than a bowl of oatmeal. Don’t try on anything other than silicone, though. Don’t ask. Review: Works great - This will work on JDictions silicone rubber ## Features - PRODUCT PURPOSE: THI-VEX is made especially for thickening Smooth-On silicones for vertical surface application (making brush-on molds) - MATERIAL PERFORMANCE: Different viscosities can be attained by varying the amount of THI-VEX - VERSATILE APPLICATIONS: THI-VEX is added as a percentage of Part A and must be thoroughly mixed with Parts A and B - WORKABLE PROCESS: THI-VEX is added as a percentage of Part A and must be thoroughly mixed with Parts A and B - FINISHED PERFORMANCE: THI-VEX will not work with Mold Max 40 or Mold Max 60 silicones ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01ACABSC6 | | Best Sellers Rank | #24,565 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #141 in Cooking & Baking Thickeners #240 in Sculpture Molding & Casting Products | | Brand | Smooth-On | | Color | Clear | | Customer Reviews | 4.7 4.7 out of 5 stars (427) | | Date First Available | January 8, 2016 | | Item Weight | 0.96 ounces | | Item model number | 43216-54379 | | Manufacturer | Smooth-On, Inc. | | Manufacturer Part Number | 43216-54379 | | Material Type | Silicone | | Package Dimensions | 3.19 x 2.72 x 1.26 inches | | Size | 1 Ounce Bottle | ## Product Details - **Brand:** Smooth-On - **Item Form:** Liquid - **Material:** Silicone - **Special Feature:** Thixotropic, Adjustable Viscosity - **Specific Uses For Product:** Casting ## Images ![Smooth-On THI-VEX, Thixotropic Agent for Thickening Silicone, 1 Ounce - Image 1](https://m.media-amazon.com/images/I/41otcWX7hrL.jpg) ## 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 ### ⭐⭐⭐⭐⭐ Thicker = Better! *by J***Y on April 26, 2026* It works! A few drops, and your silicone will be thicker than a bowl of oatmeal. Don’t try on anything other than silicone, though. Don’t ask. ### ⭐⭐⭐⭐⭐ Works great *by R***E on June 7, 2026* This will work on JDictions silicone rubber ### ⭐⭐⭐⭐⭐ 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.ro/products/22727565-smooth-on-thi-vex-thixotropic-agent-for-thickening-silicone-1](https://www.desertcart.ro/products/22727565-smooth-on-thi-vex-thixotropic-agent-for-thickening-silicone-1) --- *Product available on Desertcart Romania* *Store origin: RO* *Last updated: 2026-09-07*