Cryptolyte™ is a translucent liquid additive that causes cured Smooth-On silicone rubbers, urethane rubbers, plastics or foams to glow a bright blue under a focused ultra violet light source (blacklight). You will not see the glow effect without an UV light source. When mixed at low percentages it will not affect clarity or color of material. For example, Cryptolyte™ can be added to Crystal Clear™ water clear resins and the glow effect will not be evident until the casting is illuminated by a UV light source.

Important: Best “glow” effect is realized when Cryptolyte™ is added to clear (i.e. Sorta Clear silicone or Clear Flex urethane rubber) or translucent materials (i.e. Smooth-Cast 325 resin). Applications include special effects, Halloween mask and prop making, theme displays and security (you can make parts that are virtually undetectable in normal light but glow under UV black lighting).

The Ignite™ line of liquid fluorescent colorants is compatible with Smooth-On urethane rubbers, urethane plastics, urethane foams (rigid and flexible) and silicones. The fluorescent or "glow" effect is maximized under ultra-violet light or "black light." The most dramatic color effect is realized when an Ignite colorant is used with a clear or translucent urethane rubber (such as Clear Flex 50) or plastic (such as Smooth-Cast 325).

The NEW Ignite™ 9 pack gives you the opportunity to experience each color without spending a lot of money.

What Makes Castings Made With Ignite™ Pigments Appear To Glow? When you add Ignite fluorescent color to a urethane material, more ultraviolet light from the cured material is visible to your eye vs. castings made with SO Strong™ colorants. The casting appears brighter in ambient light and appears to glow under ultraviolet light.

To make a metal cold-casting, metal powder is mixed into Colormatch^® resin until the mixture is thick and creamy. The mixture is then "slush-cast" or brushed onto the mold surface until the resin cures. The gel coat is then back-filled with straight resin, resin mixed with metal powder, resin mixed with lead shot or Foam-iT! rigid foam. Smooth-On offers metal powders that can be added to our liquid plastics to create cold cast metal castings.

Powders include bronze, brass, copper, aluminum and nickel/silver (for a pewter-like effect).

Brass Powder
Bronze Powder
Copper Powder
Nickel Silver Powder
Aluminum Powder

SO-CURE™ Cure Accelerator is an additive designed to "accelerate" the cure time of some Smooth-On urethane liquid plastic products without significantly affecting ultimate physical properties. This allows for much faster Demolding of a part or casting from a mold.

The accelerator is added to Part B by weight and should be thoroughly mixed with Part B before adding Part A.

Important: Adding the accelerator drastically reduces the Pot Life (time you have to mix and pour material) of the liquid plastic product

URE-FIL^® Fillers are easily dispersed in most Smooth-On resins and rubbers to attain different finishes, properties and effects. Filler can act as an extender - lowering the cost of each casting, can provide casting effects, or can thicken a material, depending on formulation.

URE-FIL^® 3 is a ceramic filler that is speckled grey in color and will give plastic castings a ceramic or porcelain-like finish.

URE-FIL^® 5 is a lightweight 'pecan flour' style filler that is your best choice for achieving a wood effect in casting plastics.

URE-FIL^® 7 provides dimensional stability, economy & improved flame resistance to liquid plastics.

URE-FIL^® 9 is a fumed-silica based thickening agent primarily used with liquid urethane rubbers.

URE-FIL^® 11 extruded short fibers that can be added to Smooth-On urethane and silicone rubbers, urethane plastics and epoxies to thicken for brush-on applications. 

URE-FIL^® 15 micro-balloons that can be added to Smooth-On urethane plastics and epoxies to create very light weight castings.