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| Green Twin Oscillator Cast/Build |
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| MetalCaster:
Layout out the runners and gates for most of the parts for the green twin. |
| NickG:
Looks good! |
| MetalCaster:
Thanks Nick- I am working on the core boxes for the cylinder support and the ports and passages in the cylinder. I want cored ports and passages for this engine if I can make some that are that small. The passages will be similar to those shown below, but I think I will reverse the sweep in the passage below the port from covex to concave. I am going to attempt at least one of this engine in all cast iron. |
| doubleboost:
This is going to be good Nice drawings looking forward to the patterns & cores John |
| MetalCaster:
Thanks John. Here is the core box I came up with for the passages/ports, made from scraps of brass, bronze and copper. It needs a little refinement, but I did have some success with it. Using a very fine sand and sodium silicate/CO2. |
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