Metal clay was created in 1990.
It is safe, the only issue I have is that the metal is going to expand and the clay will shrink. This may cause cracks in the clay.
Clay Paky was created in 1976.
Jimmi Clay was created in 2005.
Clay - moth - was created in 1787.
Clay Telecom was created in 2000.
Clay Quartermain was created in 1967.
Joshua Clay was created in 1977.
Ramparts of Clay was created in 1971.
Clay's Way was created in 2004.
Pacific Clay was created in 1892.
Human Clay was created in 1998.
Clay's Hope was created in 1783.