Smooth-Cast™ plastics offer tremendous versatility and economy. They are easy to use and available as either rigid or semi-rigids. You can add different colors and/or fillers for an infinite variety of mind-blowing effects. Perfect for casting detailed models, prototypes, props and cast effect pieces.
Smooth-Cast™ 300, 300Q, 305, and 310 are ultra-low viscosity casting resins that offer the convenience of a 1:1 mix ratio by volume and yield castings that are bright white, tough, durable, machinable, paintable, and virtually bubble free.
Easier to color than our 300 Series using SO‑Strong™, UVO™ or Ignite™ colorants. Smooth-Cast™ 320, 321, and 322 also readily accept fillers (such as URE‑FIL™ 3, 5 and 7). Applications include reproducing small to medium size sculptures, making prototype models, special effect props, decorative jewelry, and taxidermy (bones, antlers, teeth etc.).
Developed specifically for adding color pigments and fillers to achieve a true color representation or filler effect. Small amounts of SO-Strong™, UVO™ or Ignite™ colorants will yield accurate, vivid colors from cured castings. Ideal for creating marble and woodgrain casting effects, or duplicating the look of real metal by adding bronze, brass or other metal powder.
Higher physical properties and higher heat resistance vs. other general purpose resins (up to 250°F/121°C if post cured). Because ONYX™ is a fast curing resin and becomes hard quickly, it is also great for doing fast cold cast bronze, brass, copper, nickel/silver and other metals.
Smooth-Cast™ 45D, 57D, 60D, 61D, 65D and 66D are low-cost urethane casting resins that cure quickly to semi-rigid plastics that offer excellent impact resistance. Smooth‑Cast™ 65D has a unique gradual cure profile making it ideal for making lightweight, hollow rotational castings.
Smooth‑Cast™ 380 and 385 are mineral filled casting resins that are very hard, durable, and cure with low shrinkage. Smooth‑Cast™ 380 features ultra high density and very low cost. Smooth‑Cast™ 385 has high compressive and flexural strength. Ideal for making industrial parts, foundry patterns, vacuum forming molds, and some ceramic applications.
|Select a Product Below||Pot Life||Cure Time||Color||Hardness|
|› Smooth-Cast™ 300||3 mins||10 mins||White||70 D|
|› Smooth-Cast™ 300Q||30 secs||5 mins||White||70 D|
|› Smooth-Cast™ 305||7 mins||30 mins||White||70 D|
|› Smooth-Cast™ 310||20 mins||4 hrs||White||70 D|
|› Smooth-Cast™ 320||3 mins||10 mins||Off White||70 D|
|› Smooth-Cast™ 321||9 mins||30 mins||Off White||70 D|
|› Smooth-Cast™ 322||20 mins||4 hrs||Off White||70 D|
|› Smooth-Cast™ 325||2.5 mins||10 mins||Clear Amber||72 D|
|› Smooth-Cast™ 326||9 mins||60 mins||Clear Amber||72 D|
|› Smooth-Cast™ 327||20 mins||4 hrs||Clear Amber||72 D|
|› Smooth-Cast™ 45D||5 mins||30 mins||Translucent White||45 D|
|› Smooth-Cast™ 57D||3 mins||30 mins||Translucent White||57 D|
|› Smooth-Cast™ 60D||5 mins||30 mins||Translucent White||60 D|
|› Smooth-Cast™ 61D||7 mins||60 mins||Translucent White||61 D|
|› Smooth-Cast™ 65D||2.5 mins||15 mins||White||65 D|
|› Smooth-Cast™ 66D||7 mins||60 mins||Grey||66 D|
|› Smooth-Cast™ ONYX™ FAST||2.5 mins||15 mins||Black||80 D|
|› Smooth-Cast™ ONYX™ SLOW||5 mins||90 mins||Black||80 D|
|› Smooth-Cast™ 380||6 mins||60 mins||Tan||82 D|
|› Smooth-Cast™ 385||20 mins||2 hrs||Beige||85 D|
The Smooth-Cast® 300 Series of liquid plastics are ultra-low viscosity casting resins that yield castings that are bright white and virtually bubble free.
Create a hollow resin casting using the semi rigid urethane plastic - Smooth-Cast® 57D
Using Smooth-Cast 57D Milo demonstrates two techniques for casting his bear skull mold.
The challenge: Make a seamless mold of a sculpted hand with same-day turnaround for castings.
Learn How To Make a Metal Cold Cast Prop Wrench With Milo
Milo shows how to create resin ear savers using a Mold Star™ 20T silicone mold and Smooth-Cast™ 65D casting resin.
How you can create a silicone respirator using Mold Star™ 20T skin safe silicone.
Learn how to rapidly make multiple face shields for personal protection
In this how-to video, Milo shows how to make a master model which is used to make numerous flexible rubber molds.
How to make an epoxy fiberglass support shell using the EpoxAmite laminating epoxy system
How to start with one bear claw and end with 24 perfect copies
Jon shows us how he created an Amazon armband for a Wonder Woman cosplay.
Jon N. shows us how he brushes Smooth-Cast 57D to make a helmet for cosplay.
How Pig Iron® Cast Magic powder can be applied to a silicone mold to make a metallic finish.
Learn how to mold and cast a backlit bust of the infamous Marvel character, Ghost Rider.
Making your own live rock offers an infinite variety of design / color possibilities.
In this resin casting tutorial video, we demonstrate how to mix and pour Smooth Cast 325 liquid plastic resin.
Martha and Morgan Levine use a dipping technique to create hard barrettes and brooches using crepe paper flowers.
An antique chair is easily repaired using Smooth-Cast® 385 mineral filled casting resin and Universal® Release Agent.
Mold making and casting gives model railroaders options for creating custom scenic display pieces.
Smooth-Cast® 65D is used in a rotocasting machine to create full-sized display heads which only weigh 2 lbs. (0.9 kgs) each.
Justin Jotso of Jester Productions and FX's replica Captain America helmet.
Frank Ippolito shows you how to create a hollow resin cast of a helmet
This moldmaking video shows the process of molding an actual trout for taxidermy or propmaking purposes.
Creating metal cold cast panels using Smooth Cast ONYX liquid plastic and bronze powder.
The metal cold-casting process is faster and much less expensive compared with foundry casting of molten metal.
Creating a realistic cast marble effect is possible with Smooth-Cast® 325 liquid plastic.
Using the slush method of casting to create a hollow, impact resistant piece.
Creating a hollow casting with high impact resistance by rotating a mold while casting.
Preparing a urethane mold for casting, measuring and mixing liquid plastic.
Milo shows how to cast resin duplicates of wooden models
This helmet was the fruit of 17 months of work.
Working on a film-set is one of the most time-intensive occupations on the planet.
Artist bridges the gap between fantasy and reality with automated life-like dolls.
When Jonathan Hunt was searching out materials to create 'Captain America' style helmets for his clients, he was looking for very particular properties.
Andrea Leanza is a special effects artist located in Treviso, Italy.
Waken Productions, Inc. was spawned from a successful machine design company.
Modern Hobbies LLC® is THE place for "Small Scale" jet modelers looking for rare, hard to find items to outfit their modern military aircraft.
A one piece cut block mold is a popular mold making method that has some definite advantages.
Ken Gardiner started making models 39 years ago as a hobby based on what he learned from his father. About eight years later, Ken decided it might be worthwhile making a living out of it.
'DDD' came up with a design that had a lower center of gravity
Robert's custom cast resin action figure accessories are well know for their ultimate detail.
Smooth-On has been a supplier to manufacturers of sports and recreational equipment for years. An example of such products involves Indoor Rock Climbing Gyms.
In 1938 a 15 year old boy created and staged his marionette version of Puss in Boots for children at the Nashville Public Library.
Rapid Technique LLC of England recently solved a daunting problem by using Smooth-Cast® 326 liquid plastic as a coating for their 3D prototypes.
Two scenic companies collaborated on a project to launch the new Jeep Liberty
Smooth-Cast ONYX® is a mercury-free urethane resin that cures quickly...
There is a new creature roaming the halls of Smooth-On. It stands seven feet tall and has razor sharp teeth!