We decided to ruin some mold making materials so you won't have to. Here, we demonstrate and explain cure inhibition of silicone rubber.

00:00 - Introduction
00:55 - Two Silicone Rubber Chemistries
01:08 - Condensation Cure Silicone Rubber
02:14 - Addition Cure Silicone Rubber
02:34 - Sulphuric v Non-Sulphur Clay Demonstration
03:49 - Urethane Foam Experiment
04:49 - Urethane Rubber Comparison
05:16 - Summary of Moldmaking Materials Pro v Con

Freeman Mfg & Supply is a materials supplier. The thousands of hours dedicated to producing this series was done in service to our industry. If you are looking for any of the materials shown, please visit us at [ Ссылка ] (our primary website for professionals) or [ Ссылка ] (curated for the DIY market).

You can see all of our videos (in sequence and in context) on our dedicated video website at [ Ссылка ]. Or check out our YouTube Playlists. Or find your next video of interest here:

Moldmaking & Casting Videos:

1 - Using Rigid Fast-Cast Urethanes for Casting Both Molds & Parts
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2 - Making Flexible Molds with Urethane Rubber
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3 - Simple Silicone Rubber Molds (Without a Parting Line)
[ Ссылка ]
4 - Two-Part Silicone Rubber Molds (Forming a Straight Parting Line)
[ Ссылка ]
5 - Moldmaking With Clear Silicone Rubber
[ Ссылка ]
6 - Making Molds & Casting Thin Walled Parts (& Using Color Tints)
[ Ссылка ]
7 - Making Two-Part Silicone Rubber Molds with Complex Parting Lines
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8 - Tips & Tricks for Moldmaking & Casting Parts with Intricate Detail
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9 - Making Simple Multi-Cavity Molds
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10 - Surface Casting Method #1 (featuring Gap Wax)
[ Ссылка ]
11 - Surface Casting Method #2 (With Brushable Urethane Casting Resin)
[ Ссылка ]
12 - Using Fillers & Pourable Foam to Lighten a Casting (& More)
[ Ссылка ]


Laminate Toolmaking & Composite Parts Videos:

1 - Laminating with Fiberglass & Epoxy - The Basics
[ Ссылка ]
2 - Building a Fiberglass & Epoxy Laminate Mold
[ Ссылка ]
3 - Vacuum Bagging a Carbon Fiber/Composite Part
[ Ссылка ]
4 - Building a Laminate Tool with Epoxy Paste
[ Ссылка ]
5 - Rapid Tool Making with the Repro Laminating System
[ Ссылка ]
6 - Making a Simple Glove Mold
[ Ссылка ]

Preparing Models, Molds, & Materials Videos:

1 - Prevent Your Castings & Models From Sticking to Your Molds
[ Ссылка ]
2 - Weighing & Mixing Resins & Silicone Rubber The Right Way
[ Ссылка ]
3 - Eliminate Entrapped Air in Molds & Castings
[ Ссылка ]
4 - How NOT to Ruin Silicone Rubber When Making Molds
[ Ссылка ]

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