Vacuum Casting Process

How a silicone mold copies a master pattern into polyurethane parts, in six steps. Press Play or pick a step. Hover or tap any part or number.

Master hung by its sprue and vent rods; nothing touches the box walls 12345
Master pattern Silicone PU resin Equipment Heaters Parting line

Silicone Mold Planner

Silicone molds needed3
Casting cycles50
Master patterns1

One master can make several silicone molds, so a second master is only needed if it gets damaged.

Source: Topworks Plastic Mold