Skulls Casting Mold

The Skulls Casting Mold from Colour de Verre casts six skull shapes across three sizes in a single firing. Finished skulls measure 1.25 inches, 1.5 inches, and 1.75 inches from chin to forehead (32, 38, and 44 mm). The mold footprint is 6.5 inches by 5.25 inches (16.5 by 13.5 cm), so it delivers a multi-piece run in a modest kiln footprint.

The three sizes open up a range of applications. The smallest skull works as a jewelry piece or worry stone, the mid-size suits embellishments on platters, plates, or candle holders, and the largest stands well on its own as a display accent or objet d'art. Colour de Verre lists fill weights of 10 grams for the 1.25 inch cavity, 17 grams for the 1.5 inch cavity, and 25 grams for the 1.75 inch cavity. Like all ceramic casting molds, it is COE agnostic and reusable across many firings when prepped correctly.

What does the Skulls Casting Mold make?
It casts six skull castings across three sizes, measuring 1.25, 1.5, and 1.75 inches from chin to forehead, in a single firing. They work as jewelry pieces, worry stones, plate and platter embellishments, candle holder accents, or standalone display pieces.

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.

How much glass do I need per skull?
Colour de Verre lists about 10 grams for the 1.25 inch cavity, 17 grams for the 1.5 inch cavity, and 25 grams for the 1.75 inch cavity. Weigh your glass and test a first run when the result matters.

How do I prep this mold before casting?
Colour de Verre specifies priming before every use with ZYP BN Lubricoat or Hotline Primo Primer. Coat the cavities evenly and let the primer dry completely before loading glass.

Specifications

• SKU: 181431
• Manufacturer: Colour de Verre
• Makes: 6 skull castings in 3 sizes per firing
• Finished piece sizes: 1.25 in, 1.5 in, and 1.75 in (32, 38, and 44 mm) chin to forehead
• Mold size: 6.5 inches L x 5.25 inches W (16.5 x 13.5 cm)
• Suggested fill weights: 10 g (1.25 in cavity), 17 g (1.5 in cavity), 25 g (1.75 in cavity)
• 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 all cavities before every use with ZYP Boron Nitride Mold Primer or Hotline Primo Primer. Coat evenly and let the primer dry completely before adding glass so the castings release cleanly.
• Fill each cavity with frit to the recommended weights: about 10 grams for the 1.25 inch skull, 17 grams for the 1.5 inch skull, and 25 grams for the 1.75 inch skull.
• The mold is COE agnostic. Use a casting schedule matched to your glass, adjusting the anneal soak temperature for your COE.
• Let the kiln cool fully before removing the cast skulls. Re-prime the mold before each subsequent firing.

Colour de Verre Suggested Firing Schedule

This is a suggested starting schedule based on Colour de Verre general guidance, not a guarantee. Every kiln fires differently. Follow the Colour de Verre project sheet for this mold, test a small run first, and adjust for your glass and kiln.

• Prime the mold before every firing (see note above).
• Heat no faster than about 350 F (195 C) per hour.
• Fire to no more than about 1450 F (785 C).
• Follow a controlled cool with an anneal soak suited to your glass COE.

Helpful downloads: Skulls Guide (PDF) · Tricks of the Trade (PDF) · Priming with ZYP Spray (PDF)

Description updated: July 6, 2026

Spot an error or have feedback on this description? Report it here.