Large Holey Dog Bone Casting Mold

The Large Holey Dog Bone mold from Creative Paradise casts one dog bone shaped glass piece per firing. The finished piece measures 2.75 inches long by 1.75 inches wide, with holes through the bone. The mold footprint is 3.75 inches by 2.75 inches, with a diagonal of 4.5 inches, keeping it compact on the kiln shelf.

Like all ceramic casting molds, this one is COE agnostic. Fill the cavity with frit, small billets, or stacked sheet scrap and fuse to the dog bone shape. Creative Paradise lists 18 grams of glass for the cavity. As a kiln casting mold it is reusable across many firings when prepped and cared for properly.

What does the Large Holey Dog Bone mold make?
It casts one holey dog bone shaped glass piece per firing, with the finished piece measuring 2.75 inches long by 1.75 inches wide. The shape works well for pet themed pendants, keychains, and decorative accents.

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 for the cavity?
Creative Paradise lists about 18 grams per firing. Weigh your glass and test a first run when the result matters.

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. Re coat as needed between firings.

Specifications

• SKU: 162084
• Manufacturer: Creative Paradise (CPI.LF83)
• Makes: 1 holey dog bone shaped piece per firing
• Finished piece size: 2.75 inches L x 1.75 inches W
• Mold size: 3.75 inches L x 2.75 inches W
• Diagonal: 4.5 inches
• Suggested fill weight: about 18 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

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