Raku is a Japanese pottery initially and currently spread throughout the globe technique. In the Raku firing is performed in an oven usually handmade, given the wear to receive this in cooking. Cooking is done directly with fire in the oven and preferably in a slightly reduced atmosphere. The previously cooked pieces are fired and are carried about 1000 ° C and that temperature is removed from the oven, cooled air directly or reduced by the action of smoke out of the oven.
The different techniques used for cooking Raku:
American Raku: In this technique the piece is fired around 1,000 ° C, remove from oven and force a hard reduction, which is usually done with sawdust or paper that turns creating a large flame that forced the reduction, which can be the entire piece or just a part. Then the piece is placed in a container forcing water quenching.
Crackle Raku (Japanese): We remove the tile from the oven when the enamel is ready. Next, the part in contact with air occurs that due to thermal shock breakage enamel to form the “crackle”. The tile can be smoked to produce a black crackle.
Naked Raku: This technique is similar to Raku crackle .The difference is when the enamel is cracked and smoked enamel is removed, showing only smoked without enamel decorations.
Copper Mate: This technique is similar to American Raku .The difference is when the enamel is cooling make controlled cuts, covering and uncovering the pieces, we can also make textures carried out essentially by copper.
Obvara: This workshop pieces are fired through a firing Raku. In addition, we conducted a separate reduction is known as Obvara. This technique is particularly suitable for indoor exposures, and smokeless.