Since my last disaster I decided to do a more extensive test this time. The first firing was to 1025*C and I used the basic principle of 50% clay and 50% glassformers, with 6%body stain mixed in to firstly see the reaction of colour in the body and secondly to distinguish the tests from one another. Here are the results:
- A - Same body as my first test. I found the surface satisfactory, colour development was good and so the vitrification. On the downside the bead slumped in the firing and the hole was closed totally. Bead stuck slightly to test tile.
- B - Standard glaze flux(1) . Body still very porous and colour underdeveloped. Will retest at higher temperature.
- C - Standard glaze flux(2) . Body still very porous and colour underdeveloped. Will retest at higher temperature.
- D - Flux used in glassmaking. Body set rockhard before drying. Surface rough and scum formed opaque layer on surface. Bead stuck to test tile. Colour development good.
- E - Flux used in glassmaking, as above but 20%. Body set rockhard before drying. Surface rough and scum formed opaque layer on surface. Bead stuck to test tile. Colour development good.
- F - Lucie Rie Bronze slip. Body very short, but otherwise interesting. Slightly vitrified and nice surface. On the downside it can only be this one coolur. I will refire at a higher temperature to investigate results.
The tests were an interesting learning curve and have motivated me to take the experiments further, I will keep you posted.
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