This variant the naked raku is very interesting for areas that can be obtained.
clays that are used are fine-grained (0.5) even for the shaping of large objects, this is possible thanks to a cooling procedure which does not require immersion of the article in water, so the thermal damage will not be violent from the object.
To obtain a smooth surface after the artifact is important engobe fashioned with the same clay used in building, sifted with a sieve normal enamel.
The first step must be given a slip of hard leather with a large flat brush and then smoothed with a soft plastic spatula, the same operation must be repeated after about two hours.
After ingobbiatura our object should be smooth to touch and not have to see the grains of chamotte.
The first firing must be done at a higher temperature than 990 ° C raku classic this to get a cookie with a good compactness.
Having superimposed the crystal to release (a mixture of quartz and kaolin) could scratch the surface with the aid of a stick of wood sharpened, we recommend the bamboo, the incisions should be deep up to the cookie in this way we get Signs driven.
After a normal raku firing the product must be immediately removed from the oven and laid on a bed of sawdust possible fine and dry and then covered with a sheet size bin proportionate to the object, the time spent in the smoking reduction is important for the integrity of the building, after having moved away with a strong abrasive sponge and detergent, we will remove the posting remained attached to the surface.
to get a smooth semi-gloss much like we treat the alabaster with fine sandpaper and wet. To maintain the effects
del'affumicatura we recommend a good pass liquid wax floor diluted with water.
An interesting variant of the technique is naked that involves the use of land sealed. The first
steps up to the second layer of slip are the same, perfectly dry piece of land we have to pass two sealed microporous derived from settling of the same clay used for shaping.
The biscuit temperature should be lower than 950 ° C by doing so we will keep an open microporosity, able to smoke very noticeable.
In this case the use of sandpaper is obviously to be avoided.
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