Silicone Additives

Adjust the viscosity, flow and handling of silicone rubber systems with professional silicone additives. This category includes thickeners, thinners, silicone oil and surface-smoothing additives for modifying platinum- and tin-cure silicones. Use them to make silicone more pourable, create brush-on consistency, soften or dilute the material, or improve the surface finish. Ideal for mold making, casting, SFX, prosthetics, sculpture and technical fabrication.

Product	Shelf Life	Operating Temperature
Silicone Thinner™	-	-
THI-VEX™	Limited	23°C
Smoothie Spray	-	-

Product

Shelf Life

Operating Temperature

Silicone Thinner™

THI-VEX™

Limited

23°C

Smoothie Spray

Why buy at FormX?

Dedication to Materials

For over thirty years we have sought out the highest quality modelling, moulding and casting materials from around the world.
Inspiring + Unique

From silicones and resins to Jesmonite and special effects materials — a curated range for professionals, artists and makers.
Expert Advice

Our sales team is widely known for their knowledge and dedication, supporting you in mould making, casting, sculpture and prototyping.
Shipping Across Europe

We ship from our warehouses in Amsterdam, Barcelona and Madrid to customers throughout Europe, from Greece up to Norway.
Amsterdam Original

Founded in Amsterdam, FormX grew from a local art foundry into a major European supplier — with our roots firmly in the city.

Silicone Additives

Why buy at FormX?

Dedication to Materials

Inspiring + Unique

Expert Advice

Shipping Across Europe

Amsterdam Original

Legal

Webshop

About

Community

Silicone Additives

Why buy at FormX?

Dedication to Materials

Inspiring + Unique

Expert Advice

Shipping Across Europe

Amsterdam Original

Subscribe to our Newsletter

Legal

Webshop

About

Community