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A hard plastic "shell" used to support a silicone or urethane mold.
A mother mold is a brushable/trowelable plastic shell that is applied to the outside of a flexible rubber mold. The rubber mold can be made of silicone or urethane.
The purpose of the mother mold is to provide a hard backing for the soft flexible mold. This enables you to make a mold with a thinner wall thickness, which can save money and material.
The most common application is to make the flexible mold out of a brushable silicone, such as our AM 128 with the thixotropic brush additive. You brush the silicone rubber on the master to a thickness of about ½ inch (less if the mold is small) then allow it to dry. When the silicone is dry, mix the mother mold material and apply it with a spatula or stiff brush to the outside of the silicone rubber mold. The working time of the mother mold is about 9 minutes and it will be usable in about 2 hours.
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Description
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Price
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AeroMarine Mother Mold is a paste-like resin that is used as a rigid backing for flexible molds. It will hold a vertical surface without sagging. When cured it provides a hard plastic "shell". Mother Mold is frequently used for backing silicone RTV and urethane molds.
Mix Ratio: 3:1 by volume
Work Life 8-10 minutes
Cure Time 90 Minutes
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| 1+ Quart Kit $68.00 |
Ships Immediately
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| 1+ Gallon Kit $130.00 |
Ships Immediately
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| 5+ Gallon Kit $490.00 |
Ships Immediately
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