Not everything goes according to plan! Here are a few examples of that rule...
Case #1 - Router Mount....
| Pic 1 Foamy is all ready with sprues glued on |
Pic 2 Melting some AL |
Pic 3 Pouring some AL |
Pic 4 FAIL! |
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ConclusionI think what's happened here (and happened many times before for me) is the adhesive I was using to glue the sprues onto the foamy was melting the foamy at the joint causing a hard area that was not allowing the AL to flow and it blew out the side of the sprue and sand...
So the very next thing I tried was to actually cut the sprues when I cut the foamy
| Pic 5 New foamy with sprues part of the design! |
Pic 6 FAIL! |
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ConclusionI think on this one I just didn't have enough aluminum and I didn't pour fast enough