Another part that I have been working on is the Cope and Drag, the upper and lower halves of the box in which the mold is made. Gingery's book calls for a few different sizes and so far, I have only gotten around to making the 12"x12". I used clear pine to construct this first one which should be keep it sturdy enough to get the job done. With the Cope making up one half and the Drag making up the other half, they are simply for sided boxes that have no top or bottom and have some way of matching the two halves together, a registration method of some sort to allow the mold to be split and put back together again so that the halves will still line up. For this size I made each half as des cribed in the book. Here is what I came up with:
Stacked on top of each other. You can see how they will fit together.
And put together ready to use.
In use, basically one half is placed on a board on the slide over the green sand and filled with sand. The mold for the part to be cast is placed so that it would be in the center and the second half is placed on top and filled with green sand. Then the two halves are split, the mold removed, the two halves put back together and the molten metal poured into the mold to cast the part.
Hopefully I will be casting parts soon!
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