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

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 21.91

Duties & taxes included

In stock

Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Portugal.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

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

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.