Small Holey Dog Bone Casting Mold

The Small Holey Dog Bone Casting Mold from Creative Paradise casts one dog bone shaped piece per firing, with the finished piece measuring 2.75 inches long by 2 inches wide. The mold footprint is 3.5 inches by 2.75 inches with a depth of 1.5 inches, and the cavity holds about 24 grams of glass.

The holey design gives the finished piece circular openings at each rounded end of the bone shape, built directly into the cavity. Those openings make the piece easy to use as a pendant with a ready-made bail hole, or as a pet-themed accent in jewelry or mosaic work. Like all ceramic casting molds, this one is COE agnostic and reusable across many firings when prepped and cared for properly.

What does the Small Holey Dog Bone mold make?
It casts one dog bone shaped glass piece, 2.75 inches long by 2 inches wide, with open circles at each rounded end. The openings let you hang the finished piece as a pendant without any additional drilling.

What are the holes in the dog bone shape for?
The circular openings at each rounded end are part of the classic dog bone silhouette and are cast directly into the piece. They can serve as a bail or hanging point for a pendant or charm.

How much glass does the cavity need?
Creative Paradise lists about 24 grams per cavity. Weigh your glass and test a first run when the result matters.

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 do I prep 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 so the glass does not stick.

Specifications

• SKU: 162083
• Manufacturer: Creative Paradise (CPI.LF86)
• Makes: 1 dog bone shaped piece
• Finished piece size: 2.75 inches L x 2 inches W
• Mold size: 3.5 inches L x 2.75 inches W x 1.5 inches T
• Diagonal: 4.25 inches
• Suggested fill weight: about 24 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: Holey Mold Tutorial (PDF) · Fill Weights for Casting Molds (PDF) · Casting Mold Tips (PDF)

Description updated: July 6, 2026

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