Sleepingsquirrel
Pre-takeoff checklist
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- Mar 6, 2011
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Sleepingsquirrel
I have done enough sand casting to know a Sprue would be more mis- shapened then the first pic in the thread.. Also, they would go the the extent of placing a horizontal hole in a Sprue as that would be a wasted motion... The Sprue is the fill hole to the mold,,, the risers, your pic called them vents, but they operate the same.. Those cast offs would be even more irregular and since both the Sprue and risers get tossed back into the kettle to melt down for the next pour, who cares what they look like, or why would they stamp proof sigs or tracable numbers on it.... IMHO..
Maybe to verify the quality of the melt the scrap is thrown into.
Technically I'm wrong to have called a sprue as there is more to casting than I knew. The skim bob was cut off and drilled to remove dross. The part was cut off where the 90 degree cut is on the bottom of the runner/gate.Take the thing to a foundry they will explain it as a part or casting waste.
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