The Small Oval Dam Casting Mold from Creative Paradise casts a single oval piece from frit or pieces of sheet glass in one firing. The mold measures 6.25 inches by 5.25 inches, and Creative Paradise lists a fill weight of 280 grams. Creative Paradise designed it to work with the Small Oval Shelf Ring slumping mold (GM234), making it a practical two-step approach: cast the oval here first, then drop and slump the finished piece onto the shelf ring in a second firing.
Like all ceramic casting molds, this one is COE agnostic. Fill the dam cavity with frit, billets, or stacked sheet scrap and fuse it to the oval form. As a kiln casting mold it is reusable across many firings when prepped and cared for properly.
What does the Small Oval Dam Casting Mold make?
It casts one flat oval piece per firing from frit or pieces of sheet glass. The finished oval can stand alone or be dropped onto the Small Oval Shelf Ring for a slumped form in a follow-up firing.
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?
Creative Paradise lists 280 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 dam.
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 the mold as needed between firings.
Specifications
- SKU: 165098
- Manufacturer: Creative Paradise (CPI.GM236)
- Makes: 1 oval casting
- Mold size: 6.25 inches L x 5.25 inches W
- Suggested fill weight: 280 grams
- Pairs with: Small Oval Shelf Ring slumping mold (GM234)
- 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 the dam with frit, billets, or stacked sheet scrap. Weigh your glass to reach the 280 gram fill Creative Paradise suggests.
- This mold pairs with the Small Oval Shelf Ring (GM234). Cast the oval first, then drop the finished piece onto the shelf ring in a separate slumping firing.
- 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):
| Segment |
Rate |
Temp (F) |
Hold |
| 1 |
300 |
1150 |
60 |
| 2 |
50 |
1310 |
30 |
| 3 |
350 |
1465 |
10 |
| 4 |
9999 |
950* |
90 |
| 5 |
100 |
700 |
05 |
*Segment 4 is the anneal soak at 950 F for COE96. If using COE90, adjust this temperature to 900 F.
Helpful downloads: Oval Koi Bowl Tutorial (PDF) · Fill Weights for Casting Molds (PDF) · Casting Mold Tips (PDF)
Description updated: July 6, 2026
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