Basics of Mold Making How‑To's

Milo demonstrates how to make a silicone mold of a clay relief sculpture, then creates a metal cold casting.

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Learn to make a mold and casting of a translucent cloak brooch perfect for cosplay.

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Heather lets her creativity shine by making handcrafted cheesecakes.

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Milo shows how to rotocast Matrix™ Dryve™ polymer gypsum

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Learn to make quick and easy reusable silicone molds for candles, perfect for the Christmas season.

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Smooth-On is here to take the guesswork out of making flexible molds and castings

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Learn how to make a simple silicone mold using Mold Star™ 15 liquid silicone rubber.

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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.

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This mold making tutorial video shows how to make a one piece silicone block mold using OOMOO® silicone rubber

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Mold Star® 15 is perfect for experienced mold makers or people just starting out.

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Milo shows how you can make your own mold knife using readily available, affordable blades.

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This video outlines the 2-part block mold making technique using silicone rubber.

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In this resin casting tutorial video, we demonstrate how to mix and pour Smooth Cast 325 liquid plastic resin.

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Mold box construction, model preparation and release agent application for a 2 part pour on mold are covered in this video.

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This tutorial shows how to create a Rebound™ 25 brush on silicone mold of a figurine

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Learn how to save material and money by making your silicone mold conform to the shape of your model.

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How to make a support shell for a brush on silicone mold using Plasti-Paste trowelable plastic.

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How to build a mold box, measure, mix, and pour urethane rubber to make a 1-piece block mold.

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Preparing a urethane mold for casting, measuring and mixing liquid plastic.

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Creating a hollow casting with high impact resistance by rotating a mold while casting.

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Using the slush method of casting to create a hollow, impact resistant piece.

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Cast Magic® Casting System is an easy way to add an endless variety of bright metallic, glitter and color effects to your castings.

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Creating a realistic cast marble effect is possible with Smooth-Cast® 325 liquid plastic.

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How you can use the duoMatrix NEO system and chopped fiber to create a durable, lightweight, hollow casting.

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The metal cold-casting process is faster and much less expensive compared with foundry casting of molten metal.

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Smooth-On one gallon pails are easy to open once you know the proper technique.

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Opening and dispensing from a 5 gallon pail properly will result in less wasted material.

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Aluminum pail opener opens and re-seals 1 gallon and 5 gallon plastic pails.

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Learn how back pressure results in a tighter cell structure and better foam castings

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How to use Sil-Poxy® silicone adhesive with a special reinforcement fabric to repair a torn mold liner.

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Repairing a torn urethane rubber mold using Ure-Bond® II urethane adhesive.

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Learn how to use Mold Max 29NV for creating a high-detail silicone mold

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Jon N. shows us how he creates a mold for his Thundercats shield.

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AquaCon® is a water based concrete release agent that aids in releasing concrete castings from Smooth-On rubber molds

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Project goal: transform a disused service entrance into an inviting stamped concrete walkway.

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Project: Replace existing service entrance with a decorative concrete walkway.

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We demonstrate how to create a metal cold casting using the duoMatrix™ NEO polymerized gypsum system.

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OOMOO® Silicone Rubber is one of the easiest mold rubbers to use on the planet and is perfect for making simple candle molds.

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We’ve come up with a way to easily build a cheap “hot box” to any size you want...

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A one piece cut block mold is a popular mold making method that has some definite advantages.

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Bubbles in clear castings can be removed by using a pressure casting technique, a shown in this tutorial video.

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Clear resin performs best when the material is vacuumed before pouring, this tutorial video outlines the steps for degassing.

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How a casting made with UVO™ pigment and an equal amount of So-Strong™ compare

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XTEND-IT® is a dry gas blanket designed to extend the shelf life of moisture sensitive polyurethane products.

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Using the Kwikee™ Sprayer to spray mold making and casting release agents will save you over 60% vs. aerosols.

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Properly pre-mixing a urethane casting resin is important to ensure the material cures properly.

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This video will illustrate the proper way to pre-mix Smooth-On Feather Lite urethane resin...

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We demonstrate using Mold Star 30 silicone, a platinum silicone for mold making...

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Using the double-mix and pour technique helps to alleviate issues with unmixed resin.

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Not premixing silicone can result in the material not setting up correctly...

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This mold making essential video demonstrates the double mix and pour technique using a 1A:1B OOMOO silicone rubber.

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How to best use Glow Worm phosphorescent powder to create a resin casting which will glow in the dark for up to 10 hours.

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How to use a gram scale to accurately weigh rubbers, plastics and other materials.

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Inadequate mixing is the number one reason for silicone rubber not curing. This video demonstrates the double mix and pour technique.

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How to use a gram scale to accurately weigh rubbers, plastics and other materials.

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How to vacuum silicone to eliminate entrapped air and remove bubbles from your finished mold or casting.

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This video demonstrates vacuum degassing Smooth-Cast 326 to remove entrapped bubbles.

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Making a mold box for mold making. The mold box serves as a containment field for the mold rubber.

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duoMatrix NEO® is a versatile polymer modified gypsum system that has superior physical and performance properties

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Examining the different types of RTV mold rubber available for mold making and casting from Smooth-On.

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Common terms and definitions in the mold making and casting processes from Smooth-On.

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This video demonstrates how to use Mold Star 20T to make a silicone mold of extruded PLA.

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Via Tested - How to make simple silicone molds to cast and paint foam replicas of props like shop tools

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How to use Pearly Green Cast Magic® powder on a black ONYX® resin casting to get a beautiful metallic finish.

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How to use PoYo Putty silicone putty to repair a damaged picture frame

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How to make a mold to pour your own lollipops

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Milo shows how you can easily remove stuck lids and keep them from sticking in the future.

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Smooth-On fan Victoria P. demonstrates how she makes a two piece mold of a glossy figure.

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Buddy Rhodes Pure Collection Powdered Pigments can add vibrant color effects to duoMatrix NEO polymer-modified gypsum.

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Cast Magic powders can add a stunning metallic, pearlescent, or glittery finish to duoMatrix NEO polymer-modified gypsum.

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Milo demonstrates how you can use a pressure chamber to achieve bubble-free castings.

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Milo demonstrates how you can use the duoMatrix NEO to create mold support shells.

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Learn a variety of resin casting color and finishing effect techniques with our Glow Worm™ Glow-In-The-Dark Powders.

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Milo demonstrates how to cast silicone and explain how to choose the proper mold material for your application.

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The spiral blade of the Green Meenee quickly mixes a variety of Smooth-On products faster than hand mixing.

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Discover the advantages and considerations behind block molds, brush-on molds, and cavity pour molds.

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Learn how to easily make a custom candle.

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