Volcanic GLAZE - technical info

Stretching my limits and playing around with coiling large-scale floor vases.

Using my signature glazes - metallic matte bronze and volcanic-crater-lava glaze and combination of the two.

“Crater glazes, volcanic glazes, or “fat lava” glazes - all terms for the same effect within ceramic glazes, have existed since nearly the inception of firing clay to a glassy surface. These terms all refer to the common phenomenon in which gasses accumulate beneath the surface of the glaze during the firing process, eventually bursting through the surface and creating an effect similar to moon craters - with the severity of this effect being dependent upon at what point in the firing cycle the release of gasses occurred.

Silicon carbide is typically the ingredient used in contemporary crater glazes, however other substances, such as cryolite or reactions releasing gas during the firing, can also rupture the surface. ” Charles Oller, 2022

Pioneered by Lucie Rie and Otto Natzler in 20th century it has now become more widely used by potters around the globe.