Holey Round Buttons Kiln Casting Mold

The Holey Round Buttons mold from Creative Paradise casts four small round glass buttons, each with a hole through the center, in a single firing. Each finished button measures 1.25 inches in diameter, and all four cavities fit within a compact 4 inch by 4 inch mold footprint. The cast pieces work well as decorative accents, jewelry components, or fiber art embellishments where the hole allows thread or wire to pass through.

Like all ceramic casting molds, this one is COE agnostic. Fill the cavities with frit, small billets, or stacked sheet scrap and fuse the glass into the button shape. Creative Paradise lists about 4 grams of glass per cavity. The mold is reusable across many firings when prepped and cared for properly.

What does the Holey Round Buttons mold make?
It casts four round glass buttons, each 1.25 inches in diameter with a hole through the center, in one firing. The hole makes them suitable for jewelry, fiber art, and any application where thread or wire attachment is useful.

What COE glass can I use in this mold?
Any COE. Ceramic casting 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 much glass do I need per button?
Creative Paradise lists about 4 grams per cavity. Fill weight varies with how full you want each button, so weigh your glass and test a first run when the result matters.

How do I prep the mold before casting?
Coat the cavities 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 adding glass. Re coat as needed between firings.

Specifications

• SKU: 10802
• Manufacturer: Creative Paradise (LF87)
• Makes: 4 round buttons with holes
• Finished piece size: 1.25 inch diameter each
• Mold size: 4 inches L x 4 inches W
• Diagonal: 5.5 inches
• Suggested fill weight: about 4 grams per cavity
• Material: ceramic kiln casting 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 casting schedule suited to your glass and kiln.

• Prime the cavities with a boron nitride mold primer such as ZYP Boron Nitride Mold Primer, or a kiln wash, and let it dry completely before adding glass so the glass does not stick.
• Fill with frit, small billets, or stacked sheet scrap. For a tack fired surface, the manufacturer suggests powder and fine frit filled uniformly to about a quarter inch.
• The mold is COE agnostic. Use a full fuse schedule matched to your glass, adjusting the final anneal soak for your COE.
• Let the kiln cool fully before removing the cast buttons. 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.

Full Fuse (COE96):

Tack Fire (COE96): for a tack fired surface, fill uniformly to about a quarter inch with powder and fine frit.

*Segment 4 is the anneal soak at 950 F for COE96. If using COE90, adjust this temperature to 900 F.

Helpful downloads: Fused Glass Buttons Tutorial (PDF) · Fill Weights for Casting Molds (PDF) · Casting Mold Tips (PDF)

Description updated: July 6, 2026

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