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bird_letter_opener [2017/01/05 01:58] 162.233.141.12 |
bird_letter_opener [2017/01/05 02:00] 162.233.141.12 |
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{{:bird3d.jpg?200|pic here}} | {{:bird3d.jpg?200|pic here}} | ||
The result isnt what I hoped for, the surface texture should be smooth. | The result isnt what I hoped for, the surface texture should be smooth. | ||
- | pic here | + | {{:bird4.jpg?200 |pic here}} |
I think this happened because my sprue wasn't long enough and the aluminum in the resivoir froze before the bird cooled. Then as the bird cooled it was able to shrink and pull away from the mold surface. | I think this happened because my sprue wasn't long enough and the aluminum in the resivoir froze before the bird cooled. Then as the bird cooled it was able to shrink and pull away from the mold surface. | ||
But sometimes we carry on and I sanded and dremmeled the casting until I got a descent finish. I didnt want to remove too much material so I left some of the pitting in the body. I ground the tail / blade at a slight angle so it looks like the vanes of a feather. | But sometimes we carry on and I sanded and dremmeled the casting until I got a descent finish. I didnt want to remove too much material so I left some of the pitting in the body. I ground the tail / blade at a slight angle so it looks like the vanes of a feather. |