Single Hole Scrap Master Casting Mold

The Single Hole Scrap Master mold from Creative Paradise is a pot melt system for turning fusible scrap glass into kiln-cast melts. Glass is loaded into the bowl, which is set on a prepared ring, and the assembly fires so the glass melts through the single hole in the bowl and pools into a circular melt below. The finished piece can be used as a platter or cold worked into tiles and cabochons, and often shows a marbled blend of colors when mixed scrap is used.

The overall mold measures 10.25 inches in diameter and stands 4.25 inches tall. Like all ceramic casting molds it is COE agnostic and reusable across many firings when primed and cared for properly.

What does the Single Hole Scrap Master make?
It produces one circular kiln melt per firing. The melt can be used as a platter, or cold worked into tiles and cabochons.

How does the pot melt process work?
Glass is loaded into the bowl, which is placed on a prepared ring. As the kiln heats, the glass melts through the single hole in the bowl and pools into a circular melt on the ring below.

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 firing?
Coat the bowl interior and ring with a boron nitride spray such as ZYP, or a kiln wash such as Hotline Primo Primer, and let it dry completely before adding glass so the melt releases cleanly.

Specifications

• SKU: 152541
• Manufacturer: Creative Paradise (CPI.GM152)
• Makes: 1 circular kiln melt per firing
• Mold size: 10.25 inches Dia. x 4.25 inches T
• 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 bowl interior and ring 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.
• Load scrap glass into the bowl, then set the bowl on the prepared ring. The glass melts through the single hole and pools into a circular melt below.
• The mold is COE agnostic. Use a firing schedule matched to your glass, adjusting the anneal soak temperature for your COE.
• Let the kiln cool fully before removing the melt. Re coat the mold surfaces 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.

Scrap Master (COE96):

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

Helpful downloads: Scrap Master Tutorial (PDF) · Fill Weights for Casting Molds (PDF) · Casting Mold Tips (PDF)

Description updated: July 6, 2026

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