Shells and Coral Frit Casting Mold

The Shells and Coral Frit Casting Mold from Creative Paradise casts a set of shell and coral shaped glass pieces in a single firing. Finished pieces range from 2 to 3.5 inches in length, providing a variety of natural forms suited to decorative accents, wall art components, and fused glass projects. The mold measures 9.5 inches by 6.5 inches with a 1.75 inch depth and an 11.5 inch diagonal, giving it a broad footprint that accommodates the different cavity shapes in one kiln load.

Like all ceramic casting molds, this one is COE agnostic. Fill the cavities with frit, small billets, or stacked sheet scrap and fuse to the shell and coral shapes. The manufacturer directs fill weight guidance to the product photos rather than listing a single gram count, so check there for cavity detail. The mold is reusable across many firings when prepped and cared for properly.

What does the Shells and Coral mold make?
It casts a set of shell and coral shaped glass pieces ranging from 2 to 3.5 inches in length in a single firing. They work well as decorative accents, wall art components, jewelry blanks, and elements in larger fused glass compositions.

What COE glass can I use in this mold?
Any COE. Ceramic casting molds are COE agnostic, so the same mold works with COE96, COE90, or other fusible glass. Match your firing schedule to the glass you are using.

How much glass do I need per cavity?
Creative Paradise directs fill weight guidance to the product photos for this mold. Check the photos for cavity detail, weigh your glass, and test a first run when the result matters.

How do I prep the mold before casting?
Coat the cavities with a kiln shelf primer such as a boron nitride spray (for example ZYP) or a kiln wash such as Hotline Primo Primer, and let it dry completely before adding glass. Re coat as needed between firings.

Specifications

• SKU: 161828
• Manufacturer: Creative Paradise (CPI.LF150)
• Makes: multiple shell and coral shaped pieces
• Finished piece sizes: 2 to 3.5 inches in length
• Mold size: 9.5 inches L x 6.5 inches W x 1.75 inches T
• Diagonal: 11.5 inches
• Suggested fill weight: refer to product photos
• Material: ceramic kiln casting mold, reusable
• Glass: any COE (COE agnostic)

Working Notes

These are guidelines, not guarantees. Every kiln fires a little differently, so test a small run first when the result matters and follow a casting schedule suited to your glass and kiln.

• Prime the cavities with a boron nitride mold primer such as ZYP Boron Nitride Mold Primer, or a kiln wash, and let it dry completely before adding glass so the glass does not stick.
• Fill with frit, small billets, or stacked sheet scrap. For a tack fired surface, the manufacturer suggests powder and fine frit filled uniformly to about a quarter inch.
• Check the product photos for fill weight guidance specific to each shell and coral cavity in this mold.
• The mold is COE agnostic. Use a full fuse schedule matched to your glass, adjusting the final anneal soak for your COE.
• Let the kiln cool fully before removing the cast pieces. Re coat the mold with primer as needed between firings.
• The Slide Hi Temp brand separator is not recommended with these molds.

Creative Paradise Suggested Firing Schedule

This is a suggested COE96 starting schedule, not a guarantee. Every kiln fires differently. Test a small run and adjust the schedule for your glass and kiln.

Full Fuse (COE96):

Tack Fire (COE96): for a tack fired surface, fill uniformly to about a quarter inch with powder and fine frit.

*Segment 4 is the anneal soak at 950 F for COE96. If using COE90, adjust this temperature to 900 F.

Helpful downloads: Seashore Tray Tutorial (PDF) · Fill Weights for Casting Molds (PDF) · Casting Mold Tips (PDF)

Description updated: July 6, 2026

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