Body stain test 2

This test is for recording body stains' fired colour, which functions as a document and reference for my project.

In the first test, the stains are from Tiranti. Colours turned out nice except the red one. It became white after 1260 firing. If I only biscuit fire it, the colour would stay. But I cannot use it like that because the colour may leak into the water and pollute it. Even the staff from the shop don't know the reason that caused this.

In the test 2, I used the body stains from Scarva and some other oxides from glazing room.

SCARVA Nano Colours 

 • Lead Free

• All colours are intermixable

• Maximum Firing Temperature 1300°C

• Add approximately 8% to make opaque glaze

There are differences between the colour Scarva gave and the real colours after firing. Some are silt but some are huge.

NC062: I am quite satisfied with the real colour. If I use it with porcelain and partly opaqued glaze, I can achieve a feeling of traditional Chinese painting.

NC026: This one is less vivid, which is more like matcha than grass.

NC034: This one is also less pure and bright than I expected, but the result is still ok.

NC047: This one changed a lot. The reason that cause this could be temperature or the amount I used. But actually what I have done are in the right range. Or should I use the clay after one month or two that the stain may dissolve better?

Oxides and Carbonates 1%

Jennifer Lee uses mixed natural oxide pigments from different places (0.25%~4%) in her work which gives comfortable and quiet feeling. Pigments like these sometimes can bring more surprise than commercial stains because of their unstable condition.  

That is why I want to do the following tests. Though I prefer uneven colour, as a tile for recording colour, they do quite well.

1. copper carbonate 1%

This oxide is used to give green colour, but here you can barely see it. It may to do with the saturation. 

2. cobalt oxide

3. cobalt carbonate

This two are used to give strong blue colour, even the amount is less than 1%. Cobalt carbonate is slightly weaker than cobalt oxide. I am satisfied with this effects.

4. chromium oxide

The chromium oxide itself is toxic to our body before firing. However I am not sure how it acts after firing that I will be cautious about this oxide.

5. black iron oxide - FeO

I only put 1% so that it gave a light grey tone.

6. red iron oxide

Maybe I should test piles with more red iron oxide next time. In one of my other tests, I put too much iron in the pigments that it became black after firing. 

7. Manganese Carbonate

I like the little dots and linen colour in this one. It may not be a main colour in the fantasy world I want to make, but I think it can harmonise the contrast in some case.

8. Rutile

So as to this one. Rutile contains iron and titanium oxide. This light rose colour is beautiful.

9. Ilmenite

10. Tin Oxide 

11. Yellow Orche

I saw this one is put with other oxides, so I gave it a try. Again, I like those little dots in it.

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I didn't have a clear clue when I did these tests that I just wanted to test the colours I had.  As a test tiles, they may help me in my future making as a basic guide. However I also realise, sometimes little difference can cause quite different result that I should do further test to achieve the colours I want.