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A bit of History....
Clay Planet originally started in the 1970's as a business called Marshall Craft, by a kiln designer and inventor, Marshall Wicke.
In the 1980's the Marshall Craft business was purchased by Bob Millavec, the name changed to Claymaker, and moved to N. 13th Street in San Jose CA. It was there the business expanded and the mass production of ceramic clay was begun.
On February 1st, 2003 Claymaker became Clay Planet, with our current ownership and management.
The business was expanded and moved to a larger facility at 1775 Russell Avenue in Santa Clara, CA.

In 2004 we purchased a controlling share and partnered with Phoenix Ceramic Supply in Santa Cruz CA.

In 2008 Clay Planet purchased (Sherry's) Western Ceramic Supply in San Carlos, CA. We became the sole manufacturer of Western Ceramic Glazes, with distributors throughout the US and beyond. Western Glazes have been produced in San Francisco and the bay area since the 1950s!

In January 2020 we purchased the name and rights to make and wholesale distribute the Aftosa / Leslies Ceramic Supply line of products. Aftosa is a long known brand in the ceramic industry for all ceramic accessories you need to compliment your clay projects. We continue to honor that legacy of products now and into the future.
Since our founding, we have:
  • Greatly expanded what the retail store offers in products.
  • Added a second delivery truck with liftgate for residential kiln delivery throughout the bay area.
  • Created several new exciting clay bodies, doubling our line of clays we produce.
  • Designed and grew the line of new Western glaze colors in high fire, mid firee, raku and beyond.
  • Added on-site & in house repair services of electric & gas kilns, slab rollers, and pottery wheels.
  • We offer firing services where you can drop off greenware or bisque and get your pieces fired to low, mid, or high fire in our kilns!
  • Partnered with Olander Earthworks to produce and distribute Texture Spheres clay texturing tools line.
We look forward to a great future with you as our customer!
Monday-Friday 9 to 3
Saturdays 10 to 3
Closed Sundays
800-443-CLAY(2529) Toll Free
408-295-3352 Local
408-295-8717 Fax
Hours of Operation

Mon-Fri: 9-5
Sat: 10-3
Closed Sundays

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408-295-3352  Local