This way of making pottery as you can guess from the name is a synthesis of several techniques: the cooking primitive wood-burning fire pit cooking Saggar firing raku and those in containers.
After many experiences fire pit, we wondered if we could get the same colors and shades without creating trenches or pits and burning large quantities of wood, research over many months has led us to another technique the test firing, but even if this does not provide holes etc.. is definitely not very controllable and very long during baking and cooling.
The solution was to combine the technical use of carbonates and sulphates of the fire pit and organic materials of the test firing all together, we can cook it in an ordinary oven raku in a couple of hours, so we can reach temperatures that allow even the use of enamel, we can extract the artifact from the oven without any problems and to intervene with smoking hair etc..
clays that can be used for molding are different I would say all those that contain a minimum of grog, in particular, I prefer white stoneware with inert thin type K 123 wbb but it works well even an ordinary clay raku.
When the artifact reaches We can flatten the hardness leather thoroughly (do not rub) and pass a first coat of earth to get that sealed pond using the same molding clay with an addition of ball-clay, total steps will be sealed for three or four (depending on the density and the type of clay used).
When our subject we will polish it dry with a soft cloth or chamois, the biscuit is between 950 ° C-1000 ° C (it is important to establish the vitrification point of the microporous necessarily must remain sealed).
The decoration of the building requires a minimum of precautions (gloves and mask) as for this technique as for the fire pit and the test firing will be used sulfates, chlorides, carbonates and salts, all of which are toxic by inhalation and, shades of gray to get the plant material previously immersed in sea water or salt water, is important to have good contact with the surface of the object.
The raku kiln firing takes about two hours with a climb up to about 350 ° C in one hour, the cooking temperature to achieve a good result is 970 ° C, cooling if you do not want to intervene smoke in the hair I can do it in the oven otherwise extract the artifact at 600 ° C. The single-fired
not sono consigliate per la velocità di salita del forno ma è anche vero che nel pit fire pochi adottano questa soluzione in quanto si rischiano molte lesioni e scrostature delle superfici trattate con le terre sigillate.
Decisamente per chi ama le tecniche primitive questa riesce a soddisfare le nostre aspettative con il minimo sforzo.
Roberto Aiudi, Luigi Montereali.
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