Amaco Lead-Free Raku Glazes will produce a very dramatic effect when reduced after the Raku firing. Remember that these glazes need to be fired to their recommended temperature of Cone 05 (1911ºF, 1044ºC).
Raku is a very unpredictable medium and is affected by many variables. The effects achieved with these or any other Raku glazes may not always be the same. Even after you have done Raku for a long time you will see that it is almost impossible to have complete control over the result or a consistent glaze effect even if you are using the glaze from the same jar. Raku firing is a spontaneous technique and all the varied effects are usually acceptable.