Ridges Slumping Mold

The Ridges Slumping Mold from Creative Paradise is a ceramic slumping form that imprints a ridge pattern onto a glass sheet during firing. The mold measures 13.25 inches by 8.5 inches, with a diagonal of 16 inches, giving it a generous working surface for slumping a pre-made fused blank or a cut sheet of fusible glass over its ridged form.

To use this mold, a flat glass sheet or fused blank is placed over or onto the form, then fired on a slumping schedule so the glass softens and conforms to the ridged surface by gravity. Like all ceramic kiln molds, this one is COE agnostic and works with COE96, COE90, or other compatible fusible glass. Prime the mold surface with a boron nitride spray or kiln wash before each use, and the mold is reusable across many firings.

What does the Ridges Slumping Mold make?
It slumps a flat glass sheet or fused blank over its ridged surface, imprinting a ridge texture onto the glass as it softens in the kiln.

What size glass sheet do I need?
The mold measures 13.25 inches by 8.5 inches, with a diagonal of 16 inches. Prepare your sheet to fit the mold area, keeping those dimensions in mind when cutting or selecting your glass.

What COE glass can I use with 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 boron nitride spray such as ZYP, or a kiln wash such as Hotline Primo Primer, and let it dry completely before placing your glass. Re-coat as needed between firings so the glass releases cleanly.

Specifications

• SKU: 162471
• Manufacturer: Creative Paradise (CPI.GM205)
• Makes: 1 ridged glass panel per firing
• Mold size: 13.25 inches L x 8.5 inches W
• Diagonal: 16 inches
• Material: ceramic kiln 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 your glass so the piece releases cleanly after firing.
• Place a flat glass sheet or fused blank over or onto the mold surface. The mold is 13.25 inches by 8.5 inches, so size your glass to fit before firing.
• The mold is COE agnostic. Use a slumping 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 3 is the anneal soak at 950 F for COE96. If using COE90, adjust this temperature to 900 F.

Description updated: July 6, 2026

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