Fillers

Buy Smooth-On at FormX

Smooth-On is one of the world’s leading manufacturers of 3D modeling materials such as mold-making, casting and special effects materials, as well as industrial casting resins, adhesives and equipment. FormX is the main distributor of Smooth-On products in Europe.

Smooth On

Fillers for resins

URE‑FIL® fillers disperse easily in Smooth-On materials. They can be added in different proportions to achieve a variety of working properties and effects. Some fillers are designed for cost-savings, others are designed for specific casting effects or improved physical properties. Other URE‑FIL® fillers are designed specifically for thickening materials for brush-on or trowelable application.

  • URE-FIL® 3 Ceramic Filler to Reduce Cost of Casting

  • URE-FIL® 5 Filler for Creating a Wood-Grain Effect

  • URE-FIL® 7 Urethane Filler for Dimensional Stability

  • URE-FIL® 9 Fumed-Silica Based Thickening Agent

  • URE-FIL® 11 Fiber Filler for Urethane and Silicone

  • URE-FIL® 15 Micro-Balloons to Reduce Casting Weight

  • Technical bulletin Ure-Fil Fillers

URE-FIL Fillers

  • Cenasphere PCR

    Cenasphere PCR

    High-Performance Lightweight Filler for Industrial and Construction Applications Cenospheres PCS R are premium-grade, hollow ceramic microspheres engineered for superior performance across a wide rang... more

  • Urefil

    Urefil

    General fine grey filler for utehane and other resins Products... more

  • URE-FIL® 3

    URE-FIL® 3

    Smooth-On URE-FIL® fillers disperse easily in Smooth-On materials. They can be added to materials in different proportions to achieve a variety of working properties and effects. Some fillers are desi... more

  • URE-FIL® 5

    URE-FIL® 5

    Smooth-On URE-FIL® fillers disperse easily in Smooth-On materials. They can be added to materials in different proportions to achieve a variety of working properties and effects. Some fillers are desi... more

  • URE-FIL® 7

    URE-FIL® 7

    URE-FIL® 7 Smooth-On URE-FIL® fillers disperse easily in Smooth-On materials. They can be added to materials in different proportions to achieve a variety of working properties and effects. Some fille... more

  • URE-FIL® 9

    URE-FIL® 9

    Smooth-On URE-FIL® fillers disperse easily in Smooth-On materials. They can be added to materials in different proportions to achieve a variety of working properties and effects. Some fillers are desi... more

  • URE-FIL® 11

    URE-FIL® 11

    Smooth-On URE-FIL® fillers disperse easily in Smooth-On materials. They can be added to materials in different proportions to achieve a variety of working properties and effects. Some fillers are desi... more

  • URE-FIL® 13

    URE-FIL® 13

    URE-FIL™ 13 is a poly-blend filler used to thicken urethane plastics and epoxies for vertical surface application. URE-FIL™ 13 is added in small amounts for thickening, which allows for additional str... more

  • URE-FIL® 15

    URE-FIL® 15

    Smooth-On URE-FIL® fillers disperse easily in Smooth-On materials. They can be added to materials in different proportions to achieve a variety of working properties and effects. Some fillers are desi... more

  • URE-FIL™ 17

    URE-FIL™ 17

    URE-FIL™ 17 pure aluminum pellet fillers can be used with Smooth-On® liquid epoxy and urethane resins to improve thermal conductivity, dimensional stability, reduce shrinkage in large mass castings, e... more

  • URE-FIL™ 19

    URE-FIL™ 19

    URE-FIL™ 19 pure aluminum pellet fillers can be used with Smooth-On® liquid epoxy and urethane resins to improve thermal conductivity, dimensional stability, reduce shrinkage in large mass castings, e... more

Why buy at FormX?

  • Dedication to Materials

    Dedication to Materials icon

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

  • Inspiring + Unique

    Inspiring + Unique icon

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

  • Expert Advice

    Expert Advice icon

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

  • Shipping Across Europe

    Shipping Across Europe icon

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

  • Amsterdam Original

    Amsterdam Original icon

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

Visa logo iDeal logo Mastercard logo Paypal logo FedEx logo DPD logo GLS logo
This website has been developed by Usecue B.V.
© 2026 FormX B.V.