Small Square Sided Slumping Mold

The Small Square Sided Slumping Mold from Creative Paradise slumps a flat glass blank into a shallow square dish with sides, measuring 3.5 inches by 3.5 inches across, with a slump depth of 0.5 inches and a diagonal span of 4.75 inches. The compact footprint calls for an accessible amount of glass, making it a practical starting point for beginners and a useful quick-batch form for experienced fusers alike.

To use this mold, a pre-fused or sheet glass blank is placed on the prepared form and fired so gravity draws the glass down into the sided square shape. Like all ceramic slumping molds, it is COE agnostic and reusable across many firings when prepped and cared for properly.

What does the Small Square Sided Slumping Mold make?
It slumps a flat glass blank into a shallow square dish with 0.5 inch deep sides, finished at 3.5 inches by 3.5 inches. The result works well as a small trinket dish, ring holder, or decorative accent piece.

What size glass blank do I need?
Start with a blank cut to roughly 3.5 inches square, or slightly larger depending on how you want the glass to settle into the form. Test a first run to dial in the size and coverage that gives you the result you want.

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

How do I prep the mold before slumping?
Coat the form 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 placing the glass. Re-coat as needed between firings.

Specifications

• SKU: 166506
• Manufacturer: Creative Paradise (CPI.GM240)
• Makes: 1 shallow square sided dish
• Finished piece size: 3.5 inches L x 3.5 inches W
• Mold size: 3.5 inches L x 3.5 inches W
• Diagonal: 4.75 inches
• Slump depth: 0.5 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 form 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 the glass so the glass does not stick.
• Place a pre-fused or sheet glass blank onto the prepared form. A blank cut to about 3.5 inches square is a good starting point; test your first run to confirm fit and how the glass settles into the sides.
• 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.

Description updated: July 6, 2026

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