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This is the pattern for the headstock. It's
made up from 5 pieces of MDF that I machined on my CNC and glued together.
I then added the fillets on the inside as needed. |
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The red stuff you are seeing is spot putty. I
got a little aggressive when sanding the Bondo fillets. |
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The bottom view. You can see the hole in the
bottom where I installed a screw to get the pattern out of the mold. |
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This was my first attempt at casting this piece.
I tried to pop gate it into the heavy section and put a riser on the other side. |
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It failed. I ended up with a large shrink
void. |
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The void transferred to the inside as well. |
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I tried gating it from the side. I did not
have enough metal in the crucible. I was not happy. |
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On the good side, the casting looks better. |
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Here is try number three. Success! |
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There is some shrinkage by the runner on the right
side in this picture, but I don't think it will hurt anything. |
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I also casted the bearing caps for the headstock.
A fairly easy part to cast. |
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Next, machining the head stock |
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