Hearts Cast-A-Cab Kiln Casting Mold

The Hearts Cast-A-Cab mold from Creative Paradise casts two heart shaped cabochons, each about 2 inches across, using a pot melt method. It is designed to work together with the Mini Scrap Master pot melt mold: glass is loaded into the pot, which sits above the prepared hearts mold, and as the kiln heats the glass melts and flows down into the cavities below. This makes it a practical way to turn even the smallest bits of fusible scrap into finished heart cabochons.

The mold footprint is 5.75 inches by 3.25 inches. Creative Paradise recommends about 37 grams of glass per cavity, with at least 25 grams of that being clear. Like all ceramic casting molds, it is COE agnostic and reusable across many firings when properly primed and cared for between uses.

What does the Hearts Cast-A-Cab mold make?
It casts two heart shaped cabochons, each roughly 2 inches across, in one firing when paired with the Mini Scrap Master pot melt mold.

How does the pot melt method work with this mold?
Glass is loaded into the Mini Scrap Master pot, which is set directly on top of the prepared hearts mold before firing. As the kiln reaches temperature the glass melts and pours down into the heart cavities, blending colors and scrap bits into each cabochon shape.

How much glass do I need per cavity?
Creative Paradise recommends about 37 grams per cavity, with at least 25 grams of that being clear glass. Weigh your glass and run a test firing when the result matters, as fill weight can vary.

What COE glass works, and how do I prep the mold?
Any COE works, since ceramic casting molds are COE agnostic. Prime the heart cavities 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. Match your firing schedule to the glass you are using.

Specifications

• SKU: 153029
• Manufacturer: Creative Paradise (CPI.LF124)
• Makes: 2 heart cabochons (pot melt)
• Finished piece size: about 2 inches each
• Mold size: 5.75 inches L x 3.25 inches W
• Suggested fill weight: about 37 grams per cavity (at least 25 grams clear)
• Pairs with: Mini Scrap Master pot melt mold
• 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 both heart 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.
• This mold is designed to pair with the Mini Scrap Master Cast-A-Cab Mold. Load the pot with your glass, place it over the prepared hearts mold, and fire so the melted glass flows down into the cavities.
• Including at least 25 grams of clear in the 37 gram fill helps scrap glass blend and flow evenly into each heart shape.
• The mold is COE agnostic. Fire it with the Mini Scrap Master pot-melt melting schedule below, which works for both COE 90 and COE 96.
• Let the kiln cool fully before removing the cast pieces. Re coat the mold with primer between firings as needed. The Slide Hi Temp brand separator is not recommended with these molds.

Creative Paradise Suggested Firing Schedule (Mini Scrap Master Melting Schedule)

This pot-melt melting schedule works for both COE 90 and COE 96. It is a suggested starting schedule, not a guarantee. Every kiln fires differently, so test a small run and adjust for your glass and kiln.

*If your kiln runs hotter than it reads, reduce Segment 1 to 1620 F. The glass separator begins to break down above 1660 F, so do not over-fire. If the glass does not fully cast at 1640 F, add to the Segment 1 hold in 15 minute increments, or raise the temperature in 5 degree increments. Place the loaded Mini Scrap Master directly over the prepared mold on a level kiln shelf so the holes in the melting pots line up over the mold cavities.

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

Description updated: July 6, 2026

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