It's called sprueing; attaching wax sticks (the red stuff) to the wax sculptures (the purple stuff), then mounting the sculptures onto a mold base(the black stuff). Next the steel tubes you see in the background, slide into the bases and are filled with investment (high temperature plaster). The wax will be burned out leaving a hollow area that the metal, in this case bronze will be poured into.
Technically, I think I followed all the rules of lost wax casting, but during the pouring all you can do is hope for the best. I'll be pouring/casting next week, so stay tuned to find out if they turn out to be beautiful sculptures or monstrous blobs?!
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