Celebrating Employee Excellence
Rocky Mountain Clay would like to take this Month of April to honor our employee: Robert Schroeder. We are honored to have Robert as a member of our staff. Robert is talented and very knowledgeable about clay. He is our Clay Architect and warehouse Manager.
Robert Schroeder is from Elizabeth Colorado. Robert has worked in the ceramic field for the last five years…
He began in ceramics working at Arapahoe Community College as a studio tech in 2011, and recently left in this position in 2015. He has been working building and repairing gas kilns for Cooperworks kilns for the last five years, and continues this work around the Denver area.
Testing Clay Body Formulas
“Many potters, from novice hobbyists to veteran ceramic artists, have made the mistake of mixing a large quantity of clay from a given formula without testing a small batch.
Once you choose a clay body formula, mix an appropriate amount of moist clay for shrinkage and absorption testing. 10 pounds of dry clay body formula should yield approximately 12 pounds of moist clay. This will make six clay test bars, measuring 5″ x 2 1/2″ x 1/4″ thick, allowing for plenty leftover for forming sample pots.These pots are then used for test firing. It’s better to create larger test pieces that give a more accurate representation of the clay body. Also, test the clay in multiple firings with glaze combinations to ensure the clay body formula’s reliability.
Test firings will ensure that the raw materials in your clay body act as planned. Not every kiln produces an even atmosphere or temperature. Placing test pieces in various locations within the kiln will offer an accurate indication of the clay body temperature range and color variation caused by the kiln atmosphere.” – Jeff Zamek
Robert currently doing additional testing of Rocky Mountain Clay for shrinkage, firing ranges and absorption. We truly appreciate Roberts clay passion.