Smooth-Cast™ Series
Low Viscosity, Easy To Use Resin
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.
HIGHLIGHTS
Smooth-Cast™ 300 Series
Bright White
Smooth-Cast™ 300 Series
Bright White
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.
One to One Mix Ratio
Low Viscosity
No Scale Necessary
Smooth-Cast™ 320 Series
Off-White
Smooth-Cast™ 320 Series
Off-White
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.).
Low Viscosity
One to One Mix Ratio
No Scale Necessary
Smooth-Cast™ 325 Series
Colormatch™ For True Color Representation
Smooth-Cast™ 325 Series
Colormatch™ For True Color Representation
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.
Easy to Color
Low Viscosity
No Scale Necessary
Smooth-Cast™ ONYX™
Ultra-Black and High Heat Resistance
Smooth-Cast™ ONYX™
Ultra-Black and High Heat Resistance
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.
High Heat Resistance
No Scale Necessary
One to One Mix Ratio
Smooth-Cast™ Semi-Rigid Resins
Smooth-Cast™ Semi-Rigid Resins
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.
No Scale Necessary
One to One Mix Ratio
Impact Resistant
Smooth-Cast™ Tooling Resins
Smooth-Cast™ Tooling Resins
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.
Low Shrinkage
Gram Scale Required for 385
Technical and Buying Information
| 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 |
VIDEOS and GALLERIES
Step-by-Step How-To Articles
video
Turning a Clay Sculpture Into a Metal Cold Casting
Milo demonstrates how to make a silicone mold of a clay relief sculpture, then creates a metal cold casting.
video
How To Create Your Own Cast Live Rock Using Smooth Cast™ 321
Making your own live rock offers an infinite variety of design / color possibilities.
video
Cold Casting a Bear Skull Using Urethane Resin and Nickel Silver Powder
Using Smooth-Cast 57D Milo demonstrates two techniques for casting his bear skull mold.
video
Seamless Silicone Glove Mold - Making Things with Milo
The challenge: Make a seamless mold of a sculpted hand with same-day turnaround for castings.
video
How To Make a Cold Cast Prop Wrench Using Real Metal Powders and Smooth-Cast™ 325
Learn How To Make a Metal Cold Cast Prop Wrench With Milo
video
How To Make Ear Savers Using Mold Star™ 20T Smooth-Cast™ 65D
Milo shows how to create resin ear savers using a Mold Star™ 20T silicone mold and Smooth-Cast™ 65D casting resin.
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How To Make a Reusable DIY Silicone Respirator Using Mold Star 20T Silicone Rubber
How you can create a silicone respirator using Mold Star™ 20T skin safe silicone.
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How To Make a DIY Face Shield Using Mold Star™ 16 Silicone and Smooth-Cast™ 65D Liquid Plastic
Learn how to rapidly make multiple face shields for personal protection
video
Making a Master Model Using Smooth-Cast 310 and URE-FIL 7
In this how-to video, Milo shows how to make a master model which is used to make numerous flexible rubber molds.
video
Cosplay Tutorial: Iron Man Helmet - Part 2: How To Make an Epoxy Support Shell and Hand Rotated Casting
How to make an epoxy fiberglass support shell using the EpoxAmite laminating epoxy system
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How To Make a Bear Claw Necklace Replica
How to start with one bear claw and end with 24 perfect copies
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How To Make a Wonder Woman Amazon Armband
Jon shows us how he created an Amazon armband for a Wonder Woman cosplay.
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How To Cast a Resin Cosplay Helmet
Jon N. shows us how he brushes Smooth-Cast 57D to make a helmet for cosplay.
video
How To Create a Metallic Finish Using Cast Magic™ Pig Iron
How Pig Iron® Cast Magic powder can be applied to a silicone mold to make a metallic finish.
How To Mold and Cast a Resin Sculpture - Ghost Rider
Learn how to mold and cast a backlit bust of the infamous Marvel character, Ghost Rider.
video
How To Make Hollow Resin Castings Using Smooth-Cast™ 57D
Create a hollow resin casting using the semi rigid urethane plastic - Smooth-Cast® 57D
video
Martha Stewart Makes Resin Flower Barrettes
Martha and Morgan Levine use a dipping technique to create hard barrettes and brooches using crepe paper flowers.
video
How To Cast Smooth-Cast™ 300 White Liquid Plastic
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.
How To Turn an Antique Chair from Trash Into Treasure
An antique chair is easily repaired using Smooth-Cast® 385 mineral filled casting resin and Universal® Release Agent.
Making A One Piece Cut Block Mold
A one piece cut block mold is a popular mold making method that has some definite advantages.
How To Cast a Custom Scenery For a Model Railroad
Mold making and casting gives model railroaders options for creating custom scenic display pieces.
video
How To Rotocast Resin for Lightweight Displays
Smooth-Cast® 65D is used in a rotocasting machine to create full-sized display heads which only weigh 2 lbs. (0.9 kgs) each.
How To Mold a Captain America Cosplay Helmet Using Rebound™ 25
Justin Jotso of Jester Productions and FX's replica Captain America helmet.
video
Tested Presents ‑ How To Slush Cast a Prop Helmet
Frank Ippolito shows you how to create a hollow resin cast of a helmet
video
How To Make a Silicone Mold of a Fish
This moldmaking video shows the process of molding an actual trout for taxidermy or propmaking purposes.
video
How To Make Metal Cold Cast Decorative Panels
Creating metal cold cast panels using Smooth Cast ONYX liquid plastic and bronze powder.
video
How To Make a Metal Cold Casting With Smooth-Cast™ 325 Resin
The metal cold-casting process is faster and much less expensive compared with foundry casting of molten metal.
video
How To Create a Marble Effect Using Urethane Plastic
Creating a realistic cast marble effect is possible with Smooth-Cast® 325 liquid plastic.
video
How To Make a Hollow Resin Casting Using Smooth-Cast™ 57D
Using the slush method of casting to create a hollow, impact resistant piece.
video
How To Rotocast a Hollow Part Using Smooth-Cast™ 65D
Creating a hollow casting with high impact resistance by rotating a mold while casting.
video
How To Cast Smooth-Cast 300 Liquid Plastic Casting Resin Into a Urethane Mold
Preparing a urethane mold for casting, measuring and mixing liquid plastic.
video
How To Cast Smooth-Cast™ 325 Urethane Resin
In this resin casting tutorial video, we demonstrate how to mix and pour Smooth Cast 325 liquid plastic resin.
video
Creating Realistic Wood Replications Using Smooth-Cast™ 320 Resin and URE-FIL™ 5
Milo shows how to cast resin duplicates of wooden models
What Have Other People Done With These Products?
Daft Punk Helmet by Volpin Props
This helmet was the fruit of 17 months of work.
Football Tee Made Indestructible with 60D
'DDD' came up with a design that had a lower center of gravity
Casting and Finishing Smooth-Cast® ONYX™ Deep Black Resin
Smooth-Cast ONYX® is a mercury-free urethane resin that cures quickly...
Themed Rock Display at New York Auto Show
Two scenic companies collaborated on a project to launch the new Jeep Liberty
A Unique Application for Smooth-Cast™ 326 Liquid Plastic
Rapid Technique LLC of England recently solved a daunting problem by using Smooth-Cast® 326 liquid plastic as a coating for their 3D prototypes.
Puppet legacy lives on with Smooth-On Products
In 1938 a 15 year old boy created and staged his marionette version of Puss in Boots for children at the Nashville Public Library.
Reaching for New Heights with Smooth-Cast™ 320 Liquid Plastic
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.
Miniature Realism Created By Robert
Robert's custom cast resin action figure accessories are well know for their ultimate detail.
Labor of Love for the Tall Masts
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.
Bad Dog Creations Speeds To The Rescue Of 'Gotham's Finest
Working on a film-set is one of the most time-intensive occupations on the planet.
Ultra Miniature Aircraft Accessories By Modern Hobbies LLC
Modern Hobbies LLC® is THE place for "Small Scale" jet modelers looking for rare, hard to find items to outfit their modern military aircraft.
Puppets Come To Life At Waken Productions
Waken Productions, Inc. was spawned from a successful machine design company.
The Imaginative Works of Andrea Leanza
Andrea Leanza is a special effects artist located in Treviso, Italy.
Captain America Tribute Helmet Made from Smooth-Cast™ 45D
When Jonathan Hunt was searching out materials to create 'Captain America' style helmets for his clients, he was looking for very particular properties.
Award-Winning Artist Brings Dolls to Life
Artist bridges the gap between fantasy and reality with automated life-like dolls.
Arcana Workshop Brings to Life Xenomorph with Smooth-On Products
There is a new creature roaming the halls of Smooth-On. It stands seven feet tall and has razor sharp teeth!