Tornado Slumping Mold

The Tornado Slumping Mold from Creative Paradise shapes a pre-made glass blank into a deep tornado form in a single firing. The mold stands 4.5 inches tall with a footprint of 9 inches by 9 inches and a diagonal of 13.75 inches. The slump depth is 2.75 inches, giving the finished piece a pronounced swirl and dimension.

To use it, place a pre-fused blank or a cut sheet of fusible glass over the form, then fire at a slumping schedule so gravity draws the glass into the tornado shape. Like all ceramic slumping molds, this one is COE agnostic and reusable across many firings when prepped and cared for properly.

What does the Tornado Slumping Mold make?
It shapes a pre-fused glass blank into a tornado form with a 2.75 inch slump depth. The result is a dimensional piece with a deep swirl suited to bowls, wall art, or sculptural display.

What size glass blank do I need?
The mold footprint is 9 inches by 9 inches with a diagonal of 13.75 inches. Cut or prepare your blank to cover the form, allowing enough material for the glass to drape fully into the 2.75 inch depth.

What COE glass can I use?
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 (for example ZYP) or a kiln wash such as Hotline Primo Primer, and let it dry completely before setting the glass in place. Re coat as needed between firings.

Specifications

• SKU: 178397
• Manufacturer: Creative Paradise
• Mold size: 9 inches L x 9 inches W x 4.5 inches T
• Diagonal: 13.75 inches
• Slump depth: 2.75 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 setting the glass in place so the glass does not stick.
• Place a pre-fused blank or a cut sheet of fusible glass over the form. The 2.75 inch slump depth means the blank needs enough surface area to drape fully into the tornado shape.
• 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.

Helpful downloads: Tornado Bowl Tutorial (PDF)

Description updated: July 6, 2026

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