Rubber patterns can be used when making plaster molds.These rubber patterns are usually made from stereolithography (SLA) patterns. When using rubber patterns, minimal draft is needed, facilitating a cast to print part. Cast to size castings help to cut down machining costs. Also, with rubber tooling, minimal parting compound is required thus insuring more detail.

With plaster molds, porosity can be a problem. We've nearly eliminated porosity using a rotary degassing unit using a special blend of gasses.

Air-set sand is used when thick chunky castings are made. The sand cools the metal faster, helping to eliminate shrinkage & porosity. Extremely thick castings can be cast this way.

We also have a green sand department for producing long running jobs. We work very closely with several pattern shops and can take your job from print through production.

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Seaport Aluminum Prototype and Casting Company Today!