Bullseye Glass Mold #7982, Small Flower Slumping Mold 5.25"

The Small Flower Slumping Mold from Bullseye Glass shapes a glass sheet into a small flower-form dish through gravity slumping. A pre-cut glass blank is set into the mold, the kiln is fired until the glass softens and settles into the flower shape, and the piece is annealed to produce a finished flower-shaped dish roughly 5.25 inches across.

The mold measures 5.25 inches by 0.75 inches (13 by 2 cm) overall. Those are the outer dimensions used to check kiln fit. Because these molds are handmade, individual pieces vary slightly in size, so measure your specific mold before cutting your glass blank. The mold is slipcast from a specially formulated clay body by Creative Ceramics in Europe and imported by Bullseye Glass. The surface is exceptionally smooth, accepts kiln wash uniformly, and holds up well across many firings when maintained properly.

What does the Small Flower Slumping Mold make?
It slumps a glass sheet into a small flower-shaped dish roughly 5.25 inches across in a single firing.

What COE glass can I use with this mold?
Any COE. Ceramic slumping molds are COE agnostic, so the same mold works with COE90, COE96, or other fusible glass. Match your firing schedule to the glass you are using.

How do I size my glass blank for this mold?
Because these molds are handmade and vary slightly in size, measure your specific mold before cutting your glass. A blank sized to the forming surface allows the glass to settle evenly into the flower shape during firing.

How do I prep the mold before slumping?
Coat the forming surface with a kiln wash such as Hotline Primo Primer and let it dry completely before placing your glass. Re-coat as needed between firings.

Specifications

• SKU: 182015
• Manufacturer: Bullseye Glass (BG7982, design #7982, item 007982-MOLD-M-EACH); slipcast by Creative Ceramics in Europe
• Makes: small flower-shaped glass dish
• Finished piece size: approximately 5.25 inches across
• Mold outer dimensions: 5.25 inches x 0.75 inches (13 x 2 cm)
• Material: slipcast ceramic slumping form, reusable
• Glass: any COE (COE agnostic)

Working Notes

These are guidelines, not guarantees. Every kiln fires a little differently, so test a small piece first when the result matters and follow a slumping schedule suited to your glass and kiln.

• Coat the forming surface with kiln wash or a boron nitride primer such as ZYP Boron Nitride Mold Primer and let it dry completely before placing your glass blank.
• Because these molds are handmade and vary slightly in size, measure your mold before cutting your glass blank.
• The mold is COE agnostic. Use a slumping schedule matched to your glass, adjusting the anneal soak temperature for your COE.
• Let the kiln cool fully before removing the slumped piece. Re-coat the forming surface with kiln wash between firings.

Bullseye Suggested Slumping Schedule

This is a suggested starting schedule based on Bullseye's published slumping guidance, not a guarantee. Every kiln fires differently. Visually confirm the slump is complete, follow Bullseye's published Suggested Slumping Schedule for your glass and mold depth, and test a small piece first.

• Ramp at about 300 F per hour up to the slump process temperature.
• Target the lowest temperature that fully forms the glass; Bullseye's published starting point for this mold is 1225 F. This is a shallow form (0.75 inches deep), so a slightly cooler temperature may be sufficient.
• Hold at the process temperature for about 1 hour (Bullseye's published hold for this mold) to let the glass settle into the mold.
• Cool as fast as possible to the anneal soak: about 900 F for COE90 or about 950 F for COE96. Hold for about 1 hour.
• Cool at about 100 F per hour from the anneal soak down to 700 F, then cool as fast as possible to room temperature with the kiln door closed.

Helpful downloads: Suggested Slumping Schedules from Bullseye Glass (PDF)

Description updated: July 6, 2026

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