Kiln Firing Services

At various times throughout the year, Portland Clay House will offer kiln firing services to the community.

Bisque: Cone 04

Glaze: Cone 6

Maximum height or width 15"

Bisque Pricing:

Bisque Fire: $14 per shelf. Shelves are 26" (L) x 13 in (W) x 6 in (H) half-round.

Price is per shelf, not per piece, so minimum price is $14.
If your piece is taller than 6" you will be charged for another shelf.
If your piece doesn’t entirely fit on the shelf, you will be charged for another shelf.
If you use Mayco Stroke and Coat on greenware please let us know. It's fine, but it will be charge as a glaze firing.
To have your pots arrive safely, transport them while still leather hard. We will finish drying them at the studio. Bone dry is the most fragile state of clay.

Glaze Pricing:

Glaze Fire: $18 per shelf. Shelves are 26" (L) x 13 in (W) x 6 in (H) half-round.

Price is per shelf, not per piece, so minimum price is $18.
If your piece is taller than 6" you will be charged for another shelf.
If your piece doesn’t entirely fit on the shelf, you will be charged for another shelf.
Ensure the bottom 1/8th in of your pottery is free from glaze. No heavy flux glazes. To avoid damage to our shelves please use a cookie.

Clay and Glaze

MUST use cone 5/6 Clay. We bisque fire to cone 04 and glaze fire to cone 6
MUST use glazes rated for cone 6.
Place your glazes pieces on cookies, if glaze drips damages shelves you will be charged an additional $25.
MUST have your pieces clearly marked with your name.

Disclaimers

Kilns are firing between 1945 degrees and 2232 degrees. A lot can happen. Portland Clay House is not responsible for damaged pieces or undesirable glaze results. We will do our best to ensure your pottery is well cared for.
We will do our best to have your pieces fired within 7-10 days, but do not make any guarantees. Turn around times will vary depending on studio workload.
We will email you when your piece is ready. You must pick up your pieces within 30 days or we will dispose of it.
Portland Clay House makes no guarantees on the outcome of your piece. Firing can be unpredictable. Glaze and bisque mishaps can happen to even the most experienced potters.