Cylinder Dam Kiln Casting Mold

The Cylinder Dam mold from Creative Paradise is a single-cavity ceramic dam mold for kilncasting one elongated rectangular glass bar per firing. The casting cavity measures 6.25 inches long by 1.75 inches wide and 0.75 inches deep, producing a long, narrow bar suited to architectural accents, sculptural components, or any fused glass project that calls for a uniform glass bar form. The outer mold footprint is 7.25 inches long by 3 inches wide by 2 inches tall, with a diagonal of 7.75 inches.

Like all ceramic casting molds, this one is COE agnostic. Load the cavity with frit, small billets, or stacked sheet scrap and fire so the glass takes the shape of the dam. The mold is reusable across many firings when prepped and cared for properly.

What does the Cylinder Dam mold make?
It casts one elongated rectangular glass bar per firing. The finished piece measures 6.25 inches long by 1.75 inches wide, with depth determined by how fully the cavity is filled, up to 0.75 inches.

How much glass do I need to fill the mold?
Creative Paradise does not list a specific fill weight for this mold. Weigh your glass based on the cavity volume and your desired finished thickness, and test a first run to dial in the amount before committing to a larger batch.

What COE glass works 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 do I prepare the mold before casting?
Coat the cavity 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: 9656
• Manufacturer: Creative Paradise (CPI.GM79)
• Makes: 1 elongated rectangular glass bar
• Finished piece size: 6.25 inches L x 1.75 inches W x up to 0.75 inches deep
• Mold size: 7.25 inches L x 3 inches W x 2 inches T
• Diagonal: 7.75 inches
• 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, and let it dry completely before adding glass so the glass does not stick.
• Fill the cavity with frit, small billets, or stacked sheet scrap. Weigh your glass to achieve the finished thickness you want, and test a first run before committing to a larger batch.
• The mold is COE agnostic. Use a full fuse schedule matched to your glass, adjusting the anneal soak temperature 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):

*Segment 3 is the anneal soak at 950 F for COE96. If using COE90, adjust this temperature to 900 F.

Helpful downloads: Pattern Bars Tutorial (PDF) · Fill Weights for Casting Molds (PDF) · Casting Mold Tips (PDF)

Description updated: July 6, 2026

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