Large Sushi Slumping Mold

The Large Sushi Slumping Mold from Creative Paradise shapes a pre-fused glass blank into a large tray form in a single slump firing. The mold measures 13.5 inches by 13.5 inches with a diagonal of 19 inches, making it one of the more generously sized forms in the Creative Paradise lineup and a practical choice for serving pieces, display trays, and decorative platters.

Because this is a slumping form rather than a casting mold, you begin with a finished fused glass blank, lay it over the form, and heat the kiln until gravity draws the glass into the sushi shape. The mold is reusable across many firings when primed and cared for properly, and it is COE agnostic, so it works with COE96, COE90, or other fusible glass.

What does the Large Sushi Slumping Mold make?
It slumps a pre-fused glass blank into a large tray shape, roughly 13.5 inches across. The finished piece works well as a serving platter, decorative tray, or display piece.

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

How big should my glass blank be?
Cut or fuse a blank sized to cover the mold footprint. The form is 13.5 by 13.5 inches with a 19 inch diagonal, so a blank sized to those dimensions will drape into the sushi shape as it slumps.

How do I prep the mold before slumping?
Coat the form with a kiln shelf primer such as a boron nitride spray or a kiln wash such as Hotline Primo Primer, and let it dry completely before placing glass. Re coat as needed between firings.

Specifications

• SKU: 156201
• Manufacturer: Creative Paradise (CPI.GM132)
• Makes: 1 slumped sushi tray
• Finished piece size: about 13.5 by 13.5 inches
• Mold size: 13.5 inches L x 13.5 inches W x 4 inches T
• Diagonal: 19 inches
• Material: ceramic slumping 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 slump schedule suited to your glass and kiln.

• Prime the form with a boron nitride mold primer such as ZYP Boron Nitride Mold Primer, or a kiln wash, and let it dry completely before placing your glass blank.
• Start with a pre-fused blank cut or fused to cover the 13.5 by 13.5 inch mold footprint. Lay it over the form and fire so gravity draws it into the sushi shape.
• The mold is COE agnostic. Use a slump schedule matched to your glass, adjusting the final anneal soak for your COE.
• Let the kiln cool fully before removing the slumped piece. 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.

Slump (COE96):

*Segment 2 is the anneal soak at 950 F for COE96. If using COE90, adjust this temperature to 900 F.

Helpful downloads: Fused Glass Fossils Tutorial (PDF)

Description updated: July 6, 2026

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