Urethane Foam Mold Making

I have been making a series of 3d printed molds recently see making a 3d printed mold and figured i should explain how i m doing the casting. It is a compilation of past high profile concrete mold making projects and also features a never before seen project. Polyurethane elastomers and casting resins silicones epoxies and latex.

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The material shot into the mold is either in the form of liquid or in the form of hardened polyurethane droplets.

Urethane foam mold making.

This video segment will show you how to make a simple urethane mold using tap urethane rtv system. Is a leading manufacturer of specialty polymers including. Foam it expanding foams are easy to use and cure rigid and strong they can be used as a lightweight casting material backfill material for encapsulation or to make hollow castings. This product is a liquid two component polyurethane system that forms rigid foam with a nominal density of 2 12 lbs.

Silicone s slick surface means that the foam will not stick to it allowing you to easily demold your final piece without damaging the foam. However if you have to use a foam made of another material be sure to coat it in liquid wax. Polytek development corp. Aeromarine products is a premier supplier of epoxy resin products urethane foam mold making supplies casting resins.

Search by product type polytek supplies materials to companies in industrial construction entertainment fine arts and technology sectors. Casting flexible polyurethane foam. That can be used for low density structural or flotation applications. Foam it series castable rigid urethane foam.

The molds are for animal ear shapes it s a long story and they need to be squishy and light weight. The injection method involves shooting the material into a mold at a very high speed. Higher densities can be made by restricting the expansion in closed molds. Injecting liquid into the mold allows for a wide variety of design capabilities but it is only conducive to making smaller parts.

Foam it 3 4 5 8 10 10 slow 15 26 are expanding water blown liquid polyurethane foams in 3 4 5 8 10 15 and 26 pound densities. Silicone molds are the best for casting foam replicas. This will keep it form sticking too much. Smooth on manufactures industry leading two component materials such as silicone urethane rubber urethane plastic urethane foam epoxy resin epoxy coatings and adhesives.

Large array of epoxy resin products. Foam it castable urethane foams will expand many times their original volume when mixed and poured.

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