More Nuka

These are all cone 10 reduction.

Although I'm not crazy about this cup, it is interesting to me. The cup is porcelain (Babu). The inside is Coleman Tea Dust and the crystals went crazy. Where the Nuka overlaps the tea dust on the rim and just inside definitely shows promise. You can also see how stark white Nuka is when not on top of something else. Even where the Nuka overlaps the Ohata (Kaki) the Nuka is barely discolored.

This is a pot that I really like. Coleman Tea Dust inside. Nuka over Tenmoku outside.

And finally, another couple bowls. Also Nuka over Tenmoku. The first one has Yellow Salt on the outside that was also on the top of the rim. You can see yellow spots where that moved down into the Nuka.

Reduction Dropoff 5/11/11

Dropped off a bunch of stuff for ^10R. These are all SCMO+0.75%SiC with Spotted Black and Hanna's Fake Ash Over. Most also with Water Color Green.
"Before" pics after the jump...

Results of the 2/14 drop-off

See this post for glaze details and "before" pics.


Pitchers - The left one is SCM with 1% SiC, Hanna's Fake Ash and mixed Water Color Green over.Coleman Tea Dust inside. The right one is mixed SCMO, Spotted Black, Hanna's Fake Ash, and mixed Water Color Green.

Pitcher has mixed SCMO, Spotted Black, and Hanna's Fake Ash. The "cookie jar" is SCM with 1% SiC, Hanna's Fake Ash and mixed Water Color Green over. Coleman Tea Dust inside.

The left pot has SCMO+0.5%SiC, Jen's Juicy Fruit, Hanna's Fake Ash and mixed Water Color Green over. The other is SCM with 1% SiC, Hanna's Fake Ash and mixed Water Color Green over.

Dropped off for ^10 Reduction 2/14

I had little bits of a bunch of glazes so I mixed the similar glazes together to use them up in this spraying. I mixed:
Water Color Green and Water Color Green+1.5% Cobalt Oxide.
SCMO+1% Silicon Carbide and SCMO+0.5% SiC.
Crappy cel phone pics after the jump...

Silicon Carbide and Strontium Crystal Magic

Here's some more tests with Silicon Carbide and Strontium Crystal Magic.

SCM (with Iron) plus 0.75% SiC, Hanna's Fake Ash, and Spotted Black. The two larger mugs also have Coyote Shino and Jen's Juicy Fruit. Everything came out really well except the Juicy Fruit seems to have left craters where it was thick. It did run really nicely. The pitcher is (Laguna Babu) Porcelain, the shots are a white stoneware (Mile Hi Birch), and the mugs are a dark brown stoneware (Mile Hi Firethorn)

SCM plus 1% SiC, Hanna's Fake Ash, and Water Color Green plus 1% Cobalt. For some reason, the camera turned dark green into dark yucky brown on the two outside pots. The cups are Mile Hi Cedar, the mugs are Firethorn.

SCM plus 1 % SiC, Hanna's Fake Ash, Coyote Shino, and Jen's Juicy Fruit (without Iron) on Firethorn.

Another test with sponge applied glaze on Firethorn. SCM plus 1% SiC, Hanna's Fake Ash, and Water Color Green plus 1% Cobalt. Once again, the camera decided to turn dark green into a yucky dark brown.

Electric Saggar Reduction

I made a couple of saggars for testing reduction in my electric kiln. I sprayed Malcolm Davis Shino with Redart on the outside, Coleman Tea Dust liner. (Note to self - the shino had been sitting around for a couple months)

The saggars are cylinders about 8"x8". Inside each saggars, I put about 1/4 to 1/3 cup of wood chips, three charcoal briquettes, and a pot which was raised about 5/8" from the floor of the saggar on a clay "cookie" and triangle stilts. I put a layer of SuperWool 607 HT on top of the saggar (to plug any gaps) and covered that with a kiln shelf.

These got serious reduction. The Coleman Tea Dust is basically black inside except where the pyroxene crystals formed. The other side of the pot on the right is pretty much completely black. I'll definitely try with less combustible material next time. I also need to mix up enough Shino so I can dip the pots.

One other note. The fiber blanket stuck to the top of the saggar so it was ruined. The fiber costs $1.67 per square foot if you get it from eBay so it's not a ridiculous expense, but I'll probably try a strip around the top of the saggar next time to limit the amount of waste.


Before firing...

Fun with SiC

Artificial reduction in an electric kiln using silicon carbide. I got some 1500 grit Silicon Carbide from eBay to see if artificial reduction would work with SCM. These were fired to Cone 8 electric.

Here are the pots with Strontium Crystal Magic plus 1% Silicon Carbide as the base with Hanna's Fake Ash and Water Color Green + 1% Cobalt Oxide over.

These worked out really well. They look very similar to the pots fired in reduction. I'll probably do a comparison post with Oxidation, Reduction, and Artificial Reduction pots side by side at some point. The pot on the right is made of a really dark stoneware, which I assume caused the Water Color Green to change to the brownish green (kind of icky) color.

On the other hand, here are some pots with Malcolm Davis Shino (with Redart) plus 1% Silicon Carbide. The little pot had Coleman Tea Dust + 1% Silicon Carbide inside. Both of these glazes were bad ideas. The Shino is a huge mass of blisters that crumble into glass powder very easily. The Tea Dust was a pretty good crater glaze, but definitely not functional.

Before firing...

SCMO with Jen's Juicy Fruit and Coyote Shino

Trying Jen's Juicy Fruit, Coyote Clay Shino (commercial), and Hanna's Fake Ash over Strontium Crystal Magic with iron. Liner is Coleman Tea Dust. ^8 electric.

These came out pretty good. I like the cup on the right the best. It's made of a dark stoneware called Firethorn with some porcelain spots.

Before firing...

Reduction Firing November 21

These were sprayed at the same time as the last oxidation firing. Strontium Crystal Magic with Hanna's Fake Ash and Water Color Green + 1.33% Cobalt Oxide over. Coleman Tea Dust inside.

Before firing...

Reduction Firing November 21

These were sprayed at the same time as the last oxidation firing. Strontium Crystal Magic with Hanna's Fake Ash and Water Color Green + 1.33% Cobalt Oxide over. Coleman Tea Dust inside.

Before firing...

Reduction Firing November 21

These were sprayed at the same time as the last oxidation firing. Strontium Crystal Magic with Hanna's Fake Ash and Water Color Green + 1.33% Cobalt Oxide over. Coleman Tea Dust inside.

Before firing...

Sponge test #2

These use the same glazes as the last several firings. Strontium Crystal Magic with Hanna's Fake Ash and Water Color Green + 1.33% Cobalt Oxide over. The differences are that I used a medium dark stoneware clay, I sponged the glaze on, and I put a ring of Ohata (a very stable glaze) right near the bottom to keep the glaze from running off the pot.

The SCM was sponged thinner than the last test - I put it on about 15 minutes after pouring the insides and the wet pot made it easy to keep thin - but the ash and WC glaze are (intentionally) thicker than the SCM. To me at least, interesting results. I'm not sure if they're so crusty because of the thinner SCM, the thicker ash over the thinner SCM, or because of the darker clay. You can definitely tell there's an ash glaze on them so I'm guessing a lot of it is due to the thicker ash over thinner SCM.

More experiments to come, but I can't get anything that hasn't already been dropped off fired in reduction until late January so I'm switching to electric for a while.

Before firing...

Oxidation and Reduction

These were sprayed at the same time with the same glazes, basically looked identical before firing. Strontium Crystal Magic with Hanna's Fake Ash and Water Color Green + 1.33% Cobalt Oxide over. Coleman Tea Dust inside. The pot on the left was fired to Cone 8 in an electric kiln. The pot on the right was fired to Cone 10 in a gas kiln in reduction.

Strontium Crystal Magic in Oxidation ^8

I decided to try another electric load with the pots sprayed just like I've sprayed the last few reduction loads. Here's a couple pitchers...

Sprayed Glaze. Strontium Crystal Magic with Hanna's Fake Ash and Watercolor Green + 1.33% Cobalt Oxide over. Coleman Tea Dust liner.

Before firing (image is pretty terrible)...

Strontium Crystal Magic in Oxidation ^8

Definitely not subtle, are they? I'm not sure if I like them yet. I know I don't like them as well as the ^10R pots.

Sprayed Glaze. Strontium Crystal Magic with Hanna's Fake Ash and Watercolor Green + 1.33% Cobalt Oxide over. Coleman Tea Dust liner.


Before firing (image is pretty terrible)...

Strontium Crystal Magic in Oxidation ^8

A couple of bowls I don't have "before" pics of...

Sprayed Glaze. Strontium Crystal Magic with Hanna's Fake Ash and Watercolor Green + 1.33% Cobalt Oxide over. Coleman Tea Dust liner. 

Results of my sponge experiment

Definitely better than I'd expected. These were fired ^10R.

The one on the right ran too much and stuck to the "cookie". When I pried it off, I cracked the foot so that one's toast. The other one didn't stick at all and even with the tiny foot it's very stable so it's getting added to my collection (unless my daughter decides it's part of her collection). No blisters or craters (or any other glaze defects).

The glazes are much more creamy looking than what I usually get with SCM but the Water Color glaze colors don't look great. Interesting, but not necessarily attractive. In any case, I think I'm going to add this to my list of things to explore further. Notes to myself:
    maybe try ^6 electric with some ^5/6 glazes over the SCM
    thin the glazes with water and don't let the pot dry out after glazing the interior?

Reduction firing November 8

Sprayed Glaze. Strontium Crystal Magic with Hanna's Fake Ash and Watercolor Green + 1% Cobalt Oxide over. Coleman Tea Dust liner and cap.

Before firing...

Reduction firing November 8

These were supposed to go to the sale, but have been claimed by my wife. I love it when she wants my pots.

Sprayed Glaze. Strontium Crystal Magic with Hanna's Fake Ash and Watercolor Green + 1% Cobalt Oxide over. Coleman Tea Dust liner.

Before firing...

Dropped off 11/7 (and 11/14)

A few more pots left for ^10 reduction firing...

Sprayed Glaze. Strontium Crystal Magic with Hanna's Fake Ash and Watercolor Green + 1.33% Cobalt Oxide over. Coleman Tea Dust liner. 

Current total is 9 larger sprayed cups, 6 small sprayed cups, 3 sprayed bowls, 1 sponged cup, and 2 sponged mugs.


Pics...