Harvest Tray Slumping Mold

The Harvest Tray slumping mold from Creative Paradise forms a flat-bottomed tray with gently rising sides, measuring 13.5 inches long by 7.5 inches wide and 1.5 inches tall. A double-thick layer of sheet glass is placed on the prepared mold and fires in a single One-and-Done schedule that fuses the layers together and slumps the glass into the tray shape at the same time.

The mold measures 15.25 inches across the diagonal. The single-firing approach makes it an accessible project for beginners, and the tray size suits decorative dishes, serving pieces, or wall art. Like all ceramic slumping molds, it is COE agnostic and reusable across many firings when prepped and cared for properly.

What does the Harvest Tray mold make?
It slumps glass into a tray shape measuring 13.5 inches long by 7.5 inches wide and 1.5 inches tall. The result works as a decorative dish, a serving piece, or a wall display.

What is the One-and-Done approach for this mold?
Creative Paradise designed the One-and-Done schedule to fuse a double-thick layer of COE96 glass with frit and slump it into the tray form in a single firing. You do not need a separate fuse run before slumping.

What COE glass can I use in this mold?
Any COE. Ceramic slumping 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 do I prep the mold before slumping?
Coat the mold surface 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: 156217
• Manufacturer: Creative Paradise (CPI.GM168)
• Makes: 1 tray
• Finished piece size: 13.5 inches L x 7.5 inches W x 1.5 inches T
• Mold size: 13.5 inches L x 7.5 inches W x 1.5 inches T
• Diagonal: 15.25 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 slumping schedule suited to your glass and kiln.

• Prime the mold surface with a boron nitride mold primer such as ZYP Boron Nitride Mold Primer, or a kiln wash, and let it dry completely before placing glass so the glass does not stick.
• Place a double-thick layer of sheet glass on the prepared mold. Add frit on top for surface decoration as desired.
• The One-and-Done schedule below fuses and slumps the glass in a single firing, so a separate fuse run is not needed.
• The mold is COE agnostic. Use a schedule matched to your glass, adjusting the anneal soak temperature for your COE.
• Let the kiln cool fully before removing the tray. 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.

One-and-Done (COE96): for a double-thick layer of glass with frit.

*Segment 5 is the anneal soak at 950 F for COE96. If using COE90, adjust this temperature to 900 F.

Helpful downloads: One and Done Harvest Tray Tutorial (PDF)

Description updated: July 6, 2026

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