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Smooth-On

Smooth-On is a leading brand in high-quality molding and casting supplies, specializing in rigid polyurethane foams and materials for sculpture, prototyping, and crafting.

2 products Updated June 4, 2026

Smooth-On Products (2)

1
Prime

Smooth-On Foam-iT! 3 Rigid Polyurethane Foam Pint Kit - 3lb Density for Easy Molding, Casting & Sculpting

Smooth-On
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Uniform cell structure ensures consistent, high-quality results
  • Water-blown formula is user-friendly and versatile for multiple applications
  • Fast curing speeds up production workflows
  • Strong rigid foam provides excellent structural support
  • Available in various densities for tailored project needs

Cons

  • Significant expansion requires molds with sufficient space
  • Needs release agent on molds to prevent sticking
  • Precise equal-volume mixing essential for best performance
2
Prime

Smooth-On Foam-iT! 5 Rigid Polyurethane Foam Pint Kit - 10X Expansion for Prop Making, Model Casting & Gap Filling

Smooth-On
9.5
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Easy 1:1 mixing by volume speeds up workflow
  • Rapid 10X expansion maximizes material efficiency
  • High 5 lb density provides sturdy, reliable strength
  • Quick tack-free surface finish in 6 minutes
  • Suitable for pigmentation to match project aesthetics

Cons

  • Extremely short 1.5-minute pot life demands fast mixing and pouring
  • Rigid formula not ideal for flexible or squishy foam applications
  • Requires adherence to MSDS for safe chemical handling

Smooth-On Brand Guide

Smooth-On stands out as a go-to brand for creators in the arts and crafts world, particularly those diving into sculpture and prototyping. Renowned for their innovative molding and casting materials, such as rigid polyurethane foams, Smooth-On products deliver reliable performance for everything from hobbyist projects to professional applications.

Brand Overview

Smooth-On has built a solid reputation among artists, sculptors, model makers, and DIY enthusiasts for providing versatile materials that expand the possibilities of crafting. Their lineup focuses on user-friendly formulas that are easy to mix and pour, resulting in strong, detailed casts. Whether you're replicating intricate designs or building lightweight prototypes, Smooth-On ensures consistent results that stand up to demanding use.

What Makes Smooth-On Stand Out

The hallmark of Smooth-On products is their exceptional quality and reliability. These materials are formulated to capture fine details while offering durability that rivals industry standards. Crafters appreciate the brand's commitment to safety and ease of use, with clear instructions that make professional outcomes accessible to beginners and experts alike. In the competitive field of sculpture supplies, Smooth-On's foams and casting compounds consistently earn praise for their workability and finished strength.

Product Quality and Reputation

Smooth-On's rigid polyurethane foams, like those in the Foam-iT! series, exemplify the brand's dedication to excellence. These products create lightweight yet sturdy structures ideal for theatrical props, architectural models, and custom sculptures. Users value how they expand evenly, filling molds precisely without excessive shrinkage. The brand's reputation is bolstered by a community of satisfied makers who rely on Smooth-On for repeatable, high-fidelity results across diverse projects.

  • Superior detail reproduction in casts
  • Quick curing times for efficient workflows
  • Versatile applications in molding & casting
  • Robust finished products that withstand handling

Who Are Smooth-On Products Best For?

Smooth-On shines for a wide audience, including professional sculptors, cosplay creators, industrial prototypers, and hobbyist crafters. If you're working in crafting or need materials for educational art programs, their foams provide the perfect balance of affordability and performance. Special effects artists and theme park designers also turn to Smooth-On for its proven track record in large-scale productions.

Key Product Categories

Within the realm of Arts, Crafts & Sewing, Smooth-On dominates the Sculpture Supplies niche, especially molding and casting. Their rigid foams are staples for creating foam board alternatives that are far more customizable. These materials integrate seamlessly into broader crafting workflows, allowing seamless transitions from sculpting to finishing.

Explore Smooth-On in Action

From small-scale resin art to expansive installations, Smooth-On empowers endless creativity. Their products encourage experimentation, whether pouring into silicone molds for jewelry or foaming up large backdrops. The brand's focus on innovation keeps pace with evolving maker trends, ensuring you're always equipped with cutting-edge tools.

What types of projects work best with Smooth-On products?

Smooth-On materials excel in sculpture, prop making, prototyping, and model building. They're particularly suited for projects requiring lightweight, detailed, and durable foam structures.

Are Smooth-On foams beginner-friendly?

Yes, with straightforward mixing ratios and quick set times, Smooth-On foams are accessible for beginners while offering pro-level results for experienced users.

How do Smooth-On products compare in the molding and casting category?

Smooth-On stands out for its balance of detail capture, expansion control, and final strength, making it a top choice among crafting enthusiasts.

Can Smooth-On be used for large-scale applications?

Absolutely, their rigid polyurethane foams scale well for bigger projects like scenery or architectural models without compromising quality.

Where can I find more crafting supplies like Smooth-On?

Check out our extensive selection in Molding & Casting and related categories for complementary tools and materials.