Unless you're very familiar with the casting process a sculpture undergoes to become bronze, this image sent from the foundry won't make much sense.  If you look at pictures of the elk and compare them, you'll notice the back legs in this picture are the ones highest, up in the air.  This step of the bronze casting process is usually referred to as "shell".  A wax duplicate created from the mold is dipped in a green "slurry" over and over to create this shell.  The wax will be burned out (thus lost wax) and bronze will be poured into the empty shell.  The shell is broken and removed.  My new elk sculpture should be cast tomorrow and then I should get it next week.  I'm anxious to see it.  So is the client who commissioned the piece.  

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