|Compatriot Michael Tieman|
I found some "firmer" clay, not as good as the foundry clay, still a bit soft with the outside temp. in the 90's. A/c and fans can only do so much. But foundry clay (the tan clay you see) is not available yet.
I will hit some of the clay with frozen air in a can to harden small areas to get some of the finer detail, but not practical on a full life size figure.