Amaco Raku Glaze Copper Matte R19

Remember that these glazes need to be fired to their recommended temperature of Cone 05 (1911°F, 1044°C).  Once they reach temperature, turn off the kiln; let it cool to about 1700°F, 944°C before you pull the pieces out of the kiln with the tongs.

(You must protect yourself from the heat when you open the kiln at that high of a temperature.  Therefore, wear heat and fireproof protective clothing, use high temperature gloves, and an appropriate respirator to protect from smoke.  If you are using an electric kiln, never pull material out of the kiln unless the kiln is turned off.)  See large color samples.

All colors in the Raku series are LEAD FREE.  R10, R11, R20  and R21 are AP non-toxic.  The remainder are CL.  CL glazes restricted from use K-6 (ASTM D-4236/LHAMA)