carbonization

My April 2022 Raku Ceramics

I just completed another raku workshop this past weekend, and as I was looking through my files I realized I’ve not yet published the raku pieces I made at my last one in April 2022. Clearly I should do that before sharing my latest workshop photos and products!

On my April 2022 raku workshop, I wanted to try to carbonize various plant fronds or leaves onto the surface of my pieces. This was a complete experiment, and it was mostly a failure. I tried a variety of ferns and tropicals out, and one after another, they burned away without leaving a trace. Here are some plates that I attempted to salvage after that didn’t work out. With the first, I pivoted to a sugar and horsehair application. With the second, I tried to use ferric chloride to stain the surface with plant leaves that weren’t carbonizing, but they just left those not-terribly-appealing ferric chloride splotches.

Once I realized those techniques were not working, I tried etching fern fronds onto a plate in a “baked potato” aluminum foil saggar firing; it kind of worked, but I think it’s underwhelming. Since none of those plant techniques were doing super well, I just put a litho carb copper glaze onto my final plate.

I also made a rounded crackle vessel and the glaze turned out really well, but the ceramic physically cracked due to thermal shock so it’s got that permanent asterisk associated with it.

I glazed this spherical vessel with copper glazes (Copper Sand is on the exterior and I think that’s Midnight Luster on the interior), and it came out looking like a little planet! This one’s a definite favorite.

And finally, the one plant piece that turned out beautifully and justified all the failures: this is another “baked potato” saggar firing, and the Muehlenbeckia axillaris vines I used carbonized perfectly into this vase’s surface.

I also lost a large platter-like vessel (it broke into quite a few pieces and was not salvageable) and had another plate fuse with a kiln brick and lose part of its bottom. I eventually recycled that broken platter-like piece in my rock tumbler!