Uploaded June 2026 | Updated September 2026, 1 week ago

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For fully three-dimensional pieces like this one, a two-part mold is the best way to capture detail and get clean, accurate castings.
In this video, we'll show you how to make a two-part silicone mold using Mold Star 16 FAST and cast a realistic metal finish using Smooth-Cast 325.

You’ll learn:
✅ How to build a clean clay bed and define the seam line
✅ How to create and place registration keys for proper alignment
✅ Key considerations when building and aligning a two-part mold
✅ Best practices for mixing, pouring, and releasing silicone mold halves
✅ How to cast with metal powder for a realistic cold-cast finish

Whether you’re new to mold making or expanding your skills, this guide will help you create precise two-part molds and high-quality castings.

Materials featured in this video:
Mold Star Platinum Silicones: smooth-on.com/product-line/mold-star
Smooth-Cast Urethane Resins: smooth-on.com/product-line/smooth-cast
Ease Release 200 Release Agent: smooth-on.com/products/ease-release-200
Metal Powders: smooth-on.com/product-line/metal-powder
Sculptex Clay: reynoldsam.com/product/sculptex


00:00 Intro
00:48 Preparation
03:02 First Half of the Mold
04:24 Second Half of the Mold
05:41 Demolding the Model
05:59 Casting
07:27 Finishing

Adult Supervision Required
Keep Out Of Reach Of Children
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