Is this a good thickener for use with alumilite quick set rtv silicone?

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.

Will this work with Mold Maker by Alumilite?

We don't test Thi-Vex with non-Smooth-On silicones.

Can I use this with OoMoo30?

It will work for OoMoo30, but I had much better results using rebound 25 with the thivex

Smooth Thi Vexã Silicone Thickening Agent 1 Oz Bottle

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Description

🧴 Elevate your mold game with precision-thickened silicone magic!

TRUSTED BY CREATORS - Highly rated with 4.6 stars from 359 users who demand precision and quality.
EFFICIENT USAGE FORMULA - Only a tiny dose needed to transform your silicone’s texture and performance.
BRUSH ON MOLD SPECIALIST - Engineered specifically for smooth, drip-free brush-on silicone molds.
CUSTOMIZABLE VISCOSITY MASTERY - Adjust thickness effortlessly for flawless vertical silicone applications.
SEAMLESS SILICONE COMPATIBILITY - Optimized for Smooth-On silicones—mixes perfectly with Parts A & B for consistent results.

Smooth Thi-Vex is a premium silicone thickening agent designed to customize viscosity for Smooth-On silicones, enabling flawless brush-on mold creation with minimal product use. Ideal for vertical surfaces, it mixes seamlessly with silicone parts A and B, delivering professional-grade mold-making results favored by hundreds of creators.

Specifications

ASIN	B01ACABSC6
Brand Name	Smooth-On
Color	Clear
Compatible Material	Rubber
Container Type	Bottle
Customer Reviews	4.6 4.6 out of 5 stars (359)
Item Form	Liquid
Item Package Quantity	1
Item Weight	27 g
Manufacturer	Smooth-On, Inc.
Material Type	Silicone
Model	43216-54379
Number of Pieces	1
Other Special Features of the Product	Thixotropic, Adjustable Viscosity
Part Number	43216-54379
Specific Uses For Product	Casting
UPC	751635839205
Unit Count	29.57 Milliliters
Viscosity Level	Medium to High
Volume	1 Fluid Ounces
Water Resistance Level	Not Water Resistant

Reviews

H**R

Thi vex

It’s great for my silicone paint

3.11.2024

M**Y

Working good with my RTV silicon

28.01.2025

R**E

Works great

This will work on JDictions silicone rubber

7.06.2026

も**ち

いいかも？

まだ使っていませんが、良さそうです。

16.06.2026

A**R

Very disappointed.

WARNING: DOES NOT THICKEN Polycraft GP-3481F RTV Silicone. I added lots of drops to no avail. So I ended up having to do loads of silicone layers to compensate. I know it works with ither silicones, smooth-on silicones for example, because I've watched countless videos of it working (my reason for using it). Very disappointed, but now I know. Thought I might need a pipette, but product has handy dropper already. Easy to control quantity dripped with care. Easy to remove lid.

4.11.2025

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