Artists and manufacturers employ meticulous methods to test the compatibility of different glazes on the same sculpture, ensuring both aesthetic appeal and structural integrity. One common approach involves creating small test tiles from the same clay body as the sculpture. These tiles are coated with various glaze combinations and fired under identical conditions to observe interactions like color shifts, cracking, or blistering.

Another technique is layering glazes in controlled increments, allowing artists to study how transparent, opaque, or reactive finishes behave when combined. Digital tools, such as glaze simulation software, also help predict outcomes before physical testing. For complex pieces, segmented testing—applying glazes to discreet sections—minimizes risks while providing valuable data.

Manufacturers often conduct kiln trials at different temperatures to assess thermal compatibility, as some glazes may melt at varying rates. Collaboration between chemists and ceramists further refines formulations to avoid undesirable reactions. Ultimately, these rigorous processes ensure that finished sculptures exhibit harmonious, durable surfaces worthy of display.