#glaze testing

[hyydraworks]

I have been unsuccessfully hunting for a replacement to an underglaze Amaco no longer makes, tan. There are somewhat comparable browns, though I tend to find them very streaky. This color under the giraffes spots is called Straw, and is the closest I've found so far, though I'm not in love with it. May try a lighter brown for the spots and see how it goes. Opinions welcome haha

[loveistheonlytruth]

Opal RIO glaze test on highfired and bisque stoneware tiles

[moolric-ceramics]

More kind of Hirsch earthenware glazes

I wrote before about how I attempted to make some Hirsch earthenware glazes but made a mistake and used a wrong ingredient. Well, I made 3 different colours that time. These are the other two. Lilac and green.

To recap how I tested them:

So what I did was, stir it up really well and dipped the first tile, making sure to get some ilmenite on it. I decanted off most of the glaze, so it barely had any ilmenite in it. I added the gerstley borate to it and then dipped the second tile.

Test Tiles

These are all made from pb103, a white stoneware, but fired to earthenware temp (1100°C).

1B - Base + green stain before adding gerstley borate 6O - Base + green stain + gerstley borate 6I - Base + lilac stain before adding gerstley borate 6P - Base + lilac stain + gerstley borate

Cylinder

Made from reclaimed clay that is a mix of different stoneware clays. It was contaminated with some earthenware clay from the pugmill however, so I needed to fire them to earthenware.

It is glazed with the 6I glaze. Now I have pictures I’m going to glaze it again in a clear glaze to see how it looks.

Bowls

These are made from the same clay as the cylinder. They are glazed in 6O and 6P, which is why they are shinier. The glaze is very thin, so would probably need to be put on in several layers to get it to come up better. They both have some speckles of ilmenite that made it through my 

The green one is barely coloured, but you can see hints. Someone else commented that it looked like shino.

The lilac one has a small puddle of green glaze at the bottom. No idea where that’s coming from.

I suspect they would both be nicer over a whiter clay body

Test rings

The test rings are all made from Walkers White Handbuilding. It fired more yellow than I was expecting.