Investment Casting

Unlock precision and quality in your investment casting process,
while improving your bottom line, with CARBO’s advanced
ceramic flour and stucco sands. Proudly made in the USA.

OPTICAST Ceramic Flour and Stucco Sand
OPTICAST Ceramic Flour and Stucco Sand

Challenge

Superior performance and value for investment casting

Increase dimensional precision, while lowering your input costs

OPTICAST, our high-performance ceramic media, is engineered for the unique demands of the investment casting industry. Unlike mined alternatives, OPTICAST is a manufactured product, delivering consistent quality, predictable business costs, and enhanced supply chain stability. OPTICAST combines exceptional thermal stability, low linear thermal expansion, and high permeability to deliver superior dimensional precision and fewer casting defects—making it ideal for complex and high-temperature pours. In addition to its technical advantages, OPTICAST is also an economical choice, offering significantly lower costs compared to zircon while maintaining consistent quality and performance. Chemically inert and non-hazardous, OPTICAST reduces environmental and safety concerns and supports efficient, high-throughput production across a wide range of casting applications.

Video Testimonial

Client Success
with P&W Foundry

See the steps from start to finish as P&W Foundry puts CARBO’s OPTICAST
to the test—delivering exceptional results in precision, surface finish, and
consistency throughout the entire investment casting process.

Investment Casting

Representatives

Industry Solutions Advisors

Our foundry industry specialists are ready to assist with your inquiries. With expert knowledge and tailored solutions, we’ll help you achieve your goals. Contact us today!

  • Ceramic Media for Renewable Energy

    Stacy McWhorter

  • Metal Casting

    Jack Larson

  • Metal Casting

    Chris Carstens

  • Ceramic Media for Renewable Energy

    Darren King

Get in Touch
with Us Today

Learn more about CARBO’s advanced solutions
designed specifically for the investment casting industry.

Investment Casting Molds made with OPTICAST Ceramic Flour and Stucco Sand

Frequently Asked Questions

Everything You
Need to Know

  • What makes OPTICAST superior to traditional investment casting media like zircon or fused silica?

    OPTICAST is engineered with a unique ceramic formulation that offers consistent thermal, physical, and chemical properties. Unlike zircon and fused silica, OPTICAST provides higher refractoriness (>1525°C), lower linear thermal expansion, and enhanced permeability. These features result in fewer casting defects, higher dimensional precision, and reduced cleaning time, making it a superior choice for complex and high-temperature casting applications​.

  • What types of casting processes and metals are compatible with OPTICAST?

    OPTICAST is compatible with a wide range of metals, resins, and additives commonly used in investment casting. Its performance remains stable across coarse, medium, and fine sizes.