obvara ceramics — Shelby Prindaville

At this most recent raku workshop I attended in late October 2025, I experimented with Mason stains in several ways. For the obvara, I did two burnished pieces with very light mason stains. I think it mostly worked well, but the obvara carbonization had a somewhat difficult time really gripping onto the surface, so I think next time I might not burnish and see how that goes.

Here is the first ceramic piece, a burnished oval bowl I did a large polka dot pastel pattern on with small amounts of teal and chartreuse Mason stains mixed into terra sigillata:

Here is the second, a burnished round bowl with a small amount of teal Mason stain mixed into terra sigillata:

I only fired four pieces with the obvara process this go-round, as I had run through a lot last time and I mostly wanted to learn the slip resist methods at this workshop. However, I wanted some obvara burnished pottery to compare to my previous unburnished works, and I’ve also decided my spherical handbuilt pots are a somewhat signature decorative form and so I wanted to have some obvara orbs. I did a smallish bowl as well.

The burnish was a mixed success with obvara - it delaminated in a few spots on two of the orbs during the dunking, which to my eye is kind of unsightly as the revealed clay layer beneath is bright white, so I color-matched and painted those in with acrylic. However, one orb and the bowl had no delamination accidents, and the resultant sheen on all four pieces is beautiful. Overall, I am happy with these and would be willing to burnish for obvara again.

Below are one photo of each of my three new obvara orbs and three photos of my new obvara bowl from my April 2024 Dakota Potters Supply workshop!