---
product_id: 22727565
title: "THI-VEX - Thixotropic Agent for Thickening Smooth-On Silicone Rubbers - 1 Ounce Bottle"
brand: "smooth-on"
price: "VT3427"
currency: VUV
in_stock: true
category: "Smooth On"
url: https://www.desertcart.vu/products/22727565-thi-vex-thixotropic-agent-for-thickening-smooth-on-silicone-rubbers
store_origin: VU
region: Vanuatu
---

# Ideal for brush-on molds Precision thickening control Minimal quantity needed THI-VEX - Thixotropic Agent for Thickening Smooth-On Silicone Rubbers - 1 Ounce Bottle

**Brand:** smooth-on
**Price:** VT3427
**Availability:** ✅ In Stock

## Summary

> 🧴 Elevate your mold game with THI-VEX — the secret to flawless brush-on silicone!

## 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?** VT3427 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/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

- • **Efficient Usage Formula:** Only a small amount required, maximizing your product’s lifespan and value.
- • **Exclusive Compatibility:** Optimized for Smooth-On silicones—excludes Mold Max 40 & 60 for precision performance.
- • **Brush-On Mold Specialist:** Perfectly engineered for vertical surface applications with Smooth-On silicones.
- • **Seamless Silicone Integration:** Mixes thoroughly with Parts A and B for consistent, reliable results.
- • **Customizable Viscosity Mastery:** Adjust thickness effortlessly to suit your mold-making needs.

## Overview

THI-VEX is a high-viscosity thixotropic agent designed to thicken Smooth-On silicone rubbers, enabling superior brush-on mold applications. Its adjustable viscosity allows precise control over mold thickness, requiring only minimal amounts for effective use. Compatible exclusively with Smooth-On silicones (excluding Mold Max 40 and 60), THI-VEX ensures consistent mixing and professional-grade mold creation.

## 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.

## 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 | #28,249 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #155 in Cooking & Baking Thickeners #323 in Sculpture Molding & Casting Products |
| Brand | Smooth-On |
| Color | Clear |
| Date First Available | January 8, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 1 Fluid Ounces |
| Item Weight | 0.96 ounces |
| Item model number | 43216-54379 |
| Manufacturer | Smooth-On, Inc. |
| Manufacturer Part Number | 43216-54379 |
| Material | Silicone |
| Material Type | Silicone |
| Number of Pieces | 1 |
| Package Dimensions | 3.5 x 1.57 x 1.3 inches |
| Package Information | Bottle |
| Size | 1 Ounce Bottle |
| Special Feature | Thixotropic, Adjustable Viscosity |
| Specific Uses For Product | Casting |
| UPC | 751635839205 |
| Viscosity | hochviskos |
| Viscosity Level | High |
| 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

## 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

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**Shop now:** [https://www.desertcart.vu/products/22727565-thi-vex-thixotropic-agent-for-thickening-smooth-on-silicone-rubbers](https://www.desertcart.vu/products/22727565-thi-vex-thixotropic-agent-for-thickening-smooth-on-silicone-rubbers)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-16*