Ok Guys, here is an update. I have poured a few waxes and have a fair success rate. Wax is very difficult to rework (and have it look good) so if the wax casts don't come out perfect back in the melt pot they go. I have poured five good ones out of seven tries. This is easy stuff, melt the wax, pour it into the mold, let it cool, pop it out of the mold. It just takes time so I usually do this while I am also working on something else. I have taken the first four good wax casts and "treed" them up. They are attached to a wax coated plastic cup which has a threaded plate embedded in it. In this case there is no main sprue, the logo it attached to the bottom of the cup with a wax spacer bar. This bar will make it easier to cut the logo away from the cup once every thing is bronze. The little wax bars separating the two logos are only to keep the wax structure ridged during the shell making process. The wax rods at the top going back to the cup are vents to allow the air to quickly escape when the molten bronze is poured into the mold.
So what you see in wax will be encased in a ceramic shell and fired in a kiln. The ceramic shell will vitrify and the wax will disappear, leaving a cavity inside the shell in the shape of the loge. Bronze will be poured in, the shell will be broken off, the cup and other extras will be cut off, the logos will be blasted clean, and defects dealt with, mounting holes drilled, and just like that.....we have logos.
Unfortunately family calls so I will be away from the foundry for a spell so progress will be halted. Also My computer is in the hospital and there is no photo shrinking software on this computer so I am going to send the few pics I have so far to Greg and he might be able to post them.
Thanks to everyone
Barry and Debbie
1970 Grand Banks 36' Classic #198