low-fire ceramic processes

My Obvara Raku Vases

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And here’s the last batch of obvara raku ceramics from my recent workshop at Dakota Potters Supply - these are the burnished vases!

This first oblong vase was the only one that I saw and heard crack during the sequential baths. It is still usable decoratively, but it does have that asterisk about it so I likely won’t exhibit or sell it. (Note, I purposely selected photos of it that don’t draw attention to the relatively large crack.)

While at the workshop, I thought that was my only casualty - but when I was applying kitchen wax to the surfaces at home, I noticed this next squat vase has a small hairline crack as well. It’s not nearly as apparent as the above piece’s flaw as it requires close examination to spot. While a crack is never ideal, in a low-fired piece like these which was always going to be decorative (not water-tight nor food-safe), it’s far less problematic than it would be in a piece intended for that kind of usage. I’ll probably keep this one myself!

The rest of the below vases are completely unblemished. This little bud vase is the smallest of the bunch.

Next we have a larger, somewhat soft rectangular vase!

And finally, a somewhat flared cylindrical vase.

I hope you’re as into the obvara pieces as I am. I really like the aesthetics this process produces - but more than that, from a conceptual standpoint I love the organic chaos that creates those aesthetics.

My Obvara Raku Plates and Platters

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In my previous post, I shared the obvara raku bowls I made on my October 21, 2023 workshop at Dakota Potters Supply. I also made some plates and platters! As always, you can click on any of the photos below to see them larger.

This first burnished plate depicts a bear, and you can’t convince me otherwise.

This next burnished plate is smaller than the first - it’d be good to hold jewelry or other small items.

A small obvara raku plate by artist Shelby Prindaville.

This final piece is the largest - it’s a platter or tray, and it has some light texture on its inside surface.

My Obvara Raku Bowls

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Here is the first batch of my obvara raku pieces from my Dakota Potters Supply workshop on October 21, 2023 - I made enough that I plan to publish three posts covering the artwork! This post shares my obvara bowls and bowl-like vessels.

Again, as background, obvara is a low-fire scalding-and-sealing process wherein you create a fermented sourdough/beer bath, plunge approximately 980°C naked ceramics fresh out of the kiln into it, wait for them to start to bloom with different tan-to-brown markings, and then arrest the surface carbonization process by rinsing the pieces off in a water bath.

The obvara process itself scalds and somewhat seals the surface of the pottery, but I went ahead and added a thin layer of kitchen wax to these pieces as well for extra protection and sheen unification. All of the below images in each gallery row are of the same artwork from different angles.

This first open bowl has a burnished-smooth surface!

This second piece is another open bowl, but this time the surface has some light texture as well as a more variable form.

This third piece is burnished smooth and a bit more closed, though there’s a quite variable lip. All of the pieces I’ll be showing you are handbuilt, pinch-pot designs.

Next we have another burnished and even more closed vessel! This one was a favorite of my fellow workshop attendees; they loved how the obvara surface turned out.

While you can click into each of the above images to see them larger, I want to close this post out with just one large image of the last burnished bowl I made!

An obvara raku handbuilt bowl by artist Shelby Prindaville.