Heart Dam Casting Mold

The Heart Dam Casting Mold from Creative Paradise uses a dam style frame to cast a single large heart shaped piece from fusible glass. The outer mold measures 8.5 inches by 8 inches, with an inner casting area of 8 inches long by 7.5 inches wide and 0.75 inches deep. A fill of about 545 grams of glass fills the heart to depth in a single firing.

The dam walls hold the molten glass in the heart shape as it fuses, and the manufacturer notes that casting releases cleanly without needing coldworking. Like all ceramic casting molds, this one is COE agnostic and works with COE96, COE90, or other fusible glass. The reusable mold carries model code CPI.GM282.

What does the Heart Dam Casting Mold make?
It casts one heart shaped piece with an inner area of about 8 inches by 7.5 inches. The dam walls contain the glass during firing so the finished piece holds the heart shape and releases cleanly after cooling.

How much glass do I need?
Creative Paradise lists a fill weight of about 545 grams for multiple stacked layers of glass to fill the 0.75 inch cavity depth. Weigh your glass and test a first run when the result matters.

What COE glass can I use?
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 do I prep the mold before casting?
Coat the inner dam surfaces 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: 183110
• Manufacturer: Creative Paradise (CPI.GM282)
• Makes: 1 heart shaped cast piece
• Finished piece size: about 8 inches L x 7.5 inches W
• Mold size: 8.5 inches L x 8 inches W x 1.25 inches T
• Inner dimensions: 8 inches L x 7.5 inches W x 0.75 inches deep
• Suggested fill weight: about 545 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 inner dam surfaces 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, billets, or stacked sheet scrap. The suggested schedule is for multiple stacked layers of glass filling the 0.75 inch cavity depth to reach the 545 gram target.
• 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, multiple layers):

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

Helpful downloads: Patty Gray Mold Instructions (PDF) · Fill Weights for Casting Molds (PDF) · Casting Mold Tips (PDF)

Description updated: July 6, 2026

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