---
product_id: 727690501
title: "THI-VEX - Thixotropic Agent for Thick Smooth On Silicone Rubber - 1 oz Bottle"
brand: "smooth-on"
price: "AR$80347"
currency: ARS
in_stock: false
reviews_count: 5
category: "Smooth On"
url: https://www.desertcart.com.ar/products/727690501-thi-vex-thixotropic-agent-for-thick-smooth-on-silicone-rubber
store_origin: AR
region: Argentina
---

# 1 oz precision dosing viscosity adjustable brush-on mold ready THI-VEX - Thixotropic Agent for Thick Smooth On Silicone Rubber - 1 oz Bottle

**Brand:** smooth-on
**Price:** AR$80347
**Availability:** ❌ Out of Stock

## Summary

> 🖌️ Elevate your silicone game—thicken, brush, and create like a pro!

## Quick Answers

- **What is this?** THI-VEX - Thixotropic Agent for Thick Smooth On Silicone Rubber - 1 oz Bottle by smooth-on
- **How much does it cost?** AR$80347 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/727690501-thi-vex-thixotropic-agent-for-thick-smooth-on-silicone-rubber)

## 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 with 4.6 stars from 345+ reviews—join the community of expert mold makers.
- • **Custom Viscosity Control:** Adjust thickness effortlessly to suit any vertical surface application.
- • **Minimal Usage, Maximum Impact:** Requires only a small amount for effective thickening—economical and efficient.
- • **Seamless Brush-On Application:** Transforms smooth silicone into a perfect brush-on mold medium for professional results.
- • **Compatible with Smooth-On Silicones:** Optimized for smooth-on silicone rubbers (excluding Mold Max 40/60) to ensure flawless performance.

## Overview

THI-VEX is a premium thixotropic agent designed to thicken smooth-on silicone rubber for brush-on mold making. Its adjustable viscosity allows precise control for vertical surfaces, requiring only a small amount per mix. Compatible with most Smooth-On silicones except Mold Max 40 and 60, it’s a trusted choice among professionals seeking flawless, drip-free applications.

## Description

THI-VEX are specially formulated to thicken smooth on silicone for vertical surfaces (creating brush-on mold). By changing the amount of THI-VEX you can get different viscosity. THI-VEX are added as a percentage of part A and must be fully mixed with part A and B. THI-VEX will not work with Mold Max 40 or Mold Max 60 silicone.

Review: It’s great for my silicone paint
Review: Working good with my RTV silicon

## Features

- Silicone Rubber Thickener
- Thickens smooth on-silicone
- For brush-on making
- Requires only a small amount

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01ACABSC6 |
| Amazon Bestseller | #241,952 in Food, Beverages & Alcohol ( See Top 100 in Food, Beverages & Alcohol ) #6,038 in Cooking & Baking Grocery Supplies |
| Batteries Included | No |
| Batteries Required? | No |
| Color | clear |
| Customer Reviews | 4.6 4.6 out of 5 stars (345) |
| Date First Available | July 25, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 27.2 g |
| Manufacturer | Smooth-On, Inc. |
| Material | Silicone |
| Number Of Pieces | 1 |
| Package Dimensions | 8.89 x 3.99 x 3.3 cm; 27.22 g |
| Part number | 43216-54379 |
| Size | 1 Ounce Bottle |
| Special Features | Chicotropic, viscosity adjustable |
| Specific Uses For Product | Casting |

## Product Details

- **Brand:** Smooth-On
- **Item Form:** Liquid
- **Material:** Silicone
- **Special Feature:** Chicotropic, viscosity adjustable
- **Specific Uses For Product:** Casting

## Images

![THI-VEX - Thixotropic Agent for Thick Smooth On Silicone Rubber - 1 oz Bottle - Image 1](https://m.media-amazon.com/images/I/2121fMJMteL.jpg)
![THI-VEX - Thixotropic Agent for Thick Smooth On Silicone Rubber - 1 oz Bottle - Image 2](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

### ⭐⭐⭐⭐⭐ Review
*by H***R on November 3, 2024*

It’s great for my silicone paint

### ⭐⭐⭐⭐ Review
*by M***Y on January 28, 2025*

Working good with my RTV silicon

### ⭐⭐⭐⭐⭐ Review
*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!!!

## 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.com.ar/products/727690501-thi-vex-thixotropic-agent-for-thick-smooth-on-silicone-rubber](https://www.desertcart.com.ar/products/727690501-thi-vex-thixotropic-agent-for-thick-smooth-on-silicone-rubber)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-28*