the clay table member portal
- commercial glaze approval form
Glazes on the Approved Glaze List (click here) are pre-approved and may be used without form submission, as long as all studio guidelines are followed.
APPROVED GLAZE LIST
AMACO
AMACO Celadon Glazes ( Cone 5 - Cone 6): LINK
AMACO Potter's Choice Glazes (Cone 5 - Cone 6): LINK
AMACO Satin Matte Glazes (Cone 5 - Cone 6): LINK
AMACO Zinc HF-09 Zinc-Free Clear: LINK
AMACO Wax Resist: LINK
MAYCO
MAYCO Stoneware Glazes- Classic, Matte, Crystal, Gloss ( Cone 5 - Cone 6): LINK
MAYCO Stroke & Coat Wonderglaze (Cone 06 - Cone 10): LINK
SPEEDBALL
SPEEDBALL All Mid-Fire Glazes (Cone 5 - Cone 6): LINK
SPECTRUM
SPECTRUM Floating Glaze (Cone 4 - Cone 6): LINK
SPECTRUM 1100 Series, Opaque Gloss (Cone 4 - Cone 6): LINK
SPECTRUM 1400 Series, Shino Glazes (Cone 4 - Cone 6): LINK
SPECTRUM 1420 Series, Ash Glazes (Cone 4 - Cone 6): LINK
SPECTRUM 1430, Floating Glazes (Cone 4 - Cone 6): LINK
SPECTRUM 1460, Semi-Transparent Glazes (Cone 4 - Cone 6): LINK
SPECTRUM 1500, Nova Glazes (Cone 4 - Cone 6): LINK
PENGUIN POTTERY SUPPLIES
NOT APPROVED FOR UNDERGLAZING/GREENWARE
If you see these glazes, they are not safe for our kiln’s bisque firing. Greenware is any work that has not been fired yet.
MAYCO Stroke and Coat: Stroke & Coat can only be used on bisquework, not on greenware. If it is used on leather hard clay and put on the bisque shelf, it will turn into a glaze at cone 06 and stick to other work in the kiln. LINK
SPECTRUM 300 Majolica Series Ultraglazes: LINK
AMACO LG Low-Fire Glazes: LINK
APPROVED underGLAZE LIST
Underglaze cannot be dipped into our glaze buckets without being fired first. Please use underglaze on greenware or, if used on bisqueware, please bisque fire it again before glazing.