Making Flexible Molds with Urethane Rubber

Urethane Rubber molds are widely used when a flexible mold material is required and a more expensive or less abrasion-resistant silicone rubber is not desired. However, their use requires careful application of release agents.

00:00 - Introduction
00:45 - Mold Board Construction
01:27 - Release Procedure
01:52 - Weighing & Mixing Freeman 1035 Urethane Rubber
02:20 - Vacuum Degassing
02:46 - Pouring Urethane Rubber
03:09 - Demolding
03:53 - Repro One Fast-Cast Urethane

This is an updated version of the video originally entitled Urethane Rubber
Molds. We’ve gone back to increase the resolution, correct the color; plus update the graphics and add some clarifying content.

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 http://freemansupply.com (our primary website for professionals) or http://miapoxy.com (curated for the DIY market).

Finally, this video was originally part of a compilation DVD entitled Making Parts, Patterns, Tools, & Molds. You can see all of those videos (in sequence and in context) on our dedicated video website at https://www.FreemanVideos.com. 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
Using Rigid Fast-Cast Urethanes for C...
2 - Making Flexible Molds with Urethane Rubber
Making Flexible Molds with Urethane R...
3 - Simple Silicone Rubber Molds (Without a Parting Line)
Simple Silicone Rubber Molds (Without...
4 - Two-Part Silicone Rubber Molds (Forming a Straight Parting Line)
Two-Part Silicone Rubber Molds (Formi...
5 - Moldmaking With Clear Silicone Rubber
Moldmaking With Clear Silicone Rubber
6 - Making Molds & Casting Thin Walled Parts (& Using Color Tints)
Making Molds & Casting Thin Walled Pa...
7 - Making Two-Part Silicone Rubber Molds with Complex Parting Lines
https://tinyurl.com/spf9z8hs
8 - Tips & Tricks for Moldmaking & Casting Parts with Intricate Detail
Tips & Tricks for Moldmaking & Castin...
9 - Making Simple Multi-Cavity Molds
Making Simple Multi-Cavity Molds
10 - Surface Casting Method #1 (featuring Gap Wax)
Surface Casting Method #1 (featuring ...
11 - Surface Casting Method #2 (With Brushable Urethane Casting Resin)
Surface Casting Method #2 (With Brush...
12 - Using Fillers & Pourable Foam to Lighten a Casting (& More)
https://tinyurl.com/2cav5em5


Laminate Toolmaking & Composite Parts Videos:

1 - Laminating with Fiberglass & Epoxy - The Basics
Laminating with Fiberglass & Epoxy - ...
2 - Building a Fiberglass & Epoxy Laminate Mold
Building a Fiberglass & Epoxy Laminat...
3 - Vacuum Bagging a Carbon Fiber/Composite Part
https://tinyurl.com/auf6d2d8
4 - Building a Laminate Tool with Epoxy Paste
Building a Laminate Tool with Epoxy P...
5 - Rapid Tool Making with the Repro Laminating System
Rapid Tool Making with the Repro Lami...
6 - Making a Simple Glove Mold
Making a Simple Glove Mold

Preparing Models, Molds, & Materials Videos:

1 - Prevent Your Castings & Models From Sticking to Your Molds
Prevent Your Castings & Models From S...
2 - Weighing & Mixing Resins & Silicone Rubber The Right Way
Weighing & Mixing Resins & Silicone R...
3 - Eliminate Entrapped Air in Molds & Castings
Eliminate Entrapped Air in Molds & Ca...
4 - How NOT to Ruin Silicone Rubber When Making Molds
https://tinyurl.com/32uwjv3z

• #howto_style
• #mold_making
• #casting_resin