>> as far as toughness goes its extremely tough when >> hardened/cooled. > I've been told that it gets brittle with age, though. > Some costumer > made a set of hooves, and they didn't last... Mayhaps a "tempering" occasionally may help - raise the temperature somewhat to near but below where moulded details are lost. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist