Holey Square Kiln Casting Mold

The Holey Square mold from Creative Paradise casts one square piece with a built-in hole, finished at 1.75 inches by 1.75 inches. The hole is shaped by the mold cavity itself, so the cast piece comes out ready to accept a bail, jump ring, or wire wrap without any drilling. The mold footprint is 2.5 inches by 2.5 inches, making it a compact single-cavity mold for jewelry and ornament work.

Like all ceramic casting molds, this one is COE agnostic. Fill the cavity with frit, small billets, or stacked sheet scrap and fuse to the holey square shape. The manufacturer lists a fill weight of about 18 grams. As a kiln casting mold it is reusable across many firings when prepped and cared for properly.

What does the Holey Square mold make?
It casts one square piece with a pre-formed hole, finished at 1.75 inches by 1.75 inches, in a single firing. The hole is formed by the mold cavity, so the cast piece is ready for jewelry assembly without any drilling.

What is the hole in the casting used for?
The hole lets you attach a bail, jump ring, or wire wrap directly to the finished piece. It is well suited for pendants, ornaments, and other hung or linked work.

How much glass do I need per firing?
Creative Paradise lists about 18 grams for the cavity. Weigh your glass and test a first run when the result matters.

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.

Specifications

• SKU: 9294
• Manufacturer: Creative Paradise (CPI.LF61)
• Makes: 1 square piece with hole
• Finished piece size: 1.75 inches L x 1.75 inches W
• Mold size: 2.5 inches L x 2.5 inches W
• Diagonal: 3.75 inches
• Suggested fill weight: about 18 grams
• 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 cavity with a boron nitride mold primer such as ZYP Boron Nitride Mold Primer, or a kiln wash such as Hotline Primo Primer, 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 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.

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: Square Holey Mold Tutorial (PDF) · Holey Mold Tutorial (PDF) · Fill Weights for Casting Molds (PDF) · Casting Mold Tips (PDF)

Description updated: July 6, 2026

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