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Investment Casting Precision Prototypes

Low volume. Quick turnaround.

3D Printed Material

Quality Investment Castings delivered on time.

With 40+ years of experience, Invest Cast is here to help you on your next project, click "Request a Quote" to get started today.

CAST METAL PROTOTYPING

Wondering what’s possible?

We specialize in turning ideas into reality within days. Invest Cast offers complete prototyping capabilities in a wide variety of metals, without tooling, in as little as 48 hours. As the largest and fastest producer of cast metal prototypes in the country, we utilize our in-house expertise along with a tight-knit group of engineers and designers who are able to help meet all your unique prototype needs. Our experienced staff is happy to work with you to figure out how to get the best prototype possible, in the shortest amount of time.

3D to Printed Casting

Prototyping is best used when:

  • Low volume or quick turn production.

  • R&D or existing manufactured parts.

  • Wider tolerances. Near net shape with 175-200 RMS surface finish.

  • Parts up to 100 pounds.

  • We use ProJet 2500 3D printers to create the prototype. Once the part is printed, we take it through our investment casting process.

Casting Example
3D Printed Material

HOW IT WORKS

Prototype Casting Process

SLS Pattern Creation

The first step in the prototype casting process is to build an SLS pattern directly from a CAD file. This can be completed in just hours without tooling.

No need for tooling

The pattern is then prepared for production by coating the part in wax. From here, we use our normal process to create a production quality part.

Wax assembly

Patterns are “wax welded” to a central sprue or cluster to facilitate pouring. Many patterns are attached to sprues for increased efficiency

Shell Building

The assembled sprue is then dipped into a ceramic slurry. After draining, the sprue is then coated with a fine silica or stucco sand. This process is repeated several times using progressively coarser grades of ceramic material to build sufficient “shell” strength.

De-waxing

The shell built sprue is then de-waxed by rapidly heating in a furnace or autoclave, leaving behind the perfect shell cavity free of wax.

Preheating shell

The shells are then fired at 1600° to 2000°. This cures the shells interior into a smooth, hard and strong ceramic material.

Pouring

The sprues are then removed from the furnace to have the molten metal poured into them. Once the shell is filled with metal, it needs to cool and have the shell material removed from the outside of the casted parts.

Part Finishing

Once clear of ceramic shell, the cast parts get cut off from the sprue, then they are brought through a number of finishing processes. These processes include various cleaning stages, grinding, plating, machining, and heat treat.

Cross Section of Casted Prototype

Invest Cast Inc. Precision Castings.

Get the best prototype possible in the shortest amount of time. Inquire about our special request shortened lead times.

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