Swallowtail Butterfly Casting Mold

The Swallowtail Butterfly casting mold from Creative Paradise casts a single swallowtail butterfly shape in one firing. The finished cast piece measures 5 inches long by 4.5 inches wide, capturing the full wing spread of a swallowtail in glass. The mold footprint is 5.75 inches by 5.25 inches with a depth of 1.5 inches, giving the cavity enough volume for a substantial cast.

Like all ceramic casting molds, this one is COE agnostic. Load the cavity with frit, billets, or stacked sheet scrap and fuse to the butterfly outline. Creative Paradise lists a fill weight of 85 grams for the cavity. The mold is reusable across many firings when properly prepped and cared for.

What does the Swallowtail Butterfly mold make?
It casts one swallowtail butterfly shape per firing, with the finished piece measuring 5 inches by 4.5 inches. The cast works well as a standalone decorative piece, a panel accent, or a display element.

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 to fill the butterfly cavity?
Creative Paradise lists 85 grams for the cavity. Weigh your glass and test a first run when the result matters, as fill weight can vary with how you load the cavity.

How do I prep this 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: 168274
• Manufacturer: Creative Paradise (CPI.LF107)
• Makes: 1 swallowtail butterfly
• Finished piece size: 5 inches L x 4.5 inches W
• Mold size: 5.75 inches L x 5.25 inches W x 1.5 inches T
• Suggested fill weight: 85 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 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 with frit, small billets, or stacked sheet scrap. For a tack fired surface, the manufacturer suggests powder and fine frit filled uniformly to about a quarter inch.
• 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):

Tack Fire (COE96): for a tack fired surface, fill uniformly to about a quarter inch with powder and fine frit.

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

Helpful downloads: Frit Cast Butterfly Tutorial (PDF) · Fill Weights for Casting Molds (PDF) · Casting Mold Tips (PDF)

Description updated: July 6, 2026

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