HotRodTechBits #1: Sump foundry pattern

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In which I attempt to make a matchplate style foundry pattern for a sump.

#backyardmetalfoundry
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Great job on the pattern! Excellent printer work, but that's just the start.

andrewmartin
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Best use for a 3d plastic printer I've seen to date. Well done! Looking forward to part 2!

jagboy
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Liking this - get your aluminium really hot when pouring this Olly. I’m sure you have a feeder, risers and also decent ingate in mind. I’m actually a foundry Engineer by trade - long time ago it seems

MARK
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Super cool, can't wait to see how it turns out!

tobhomott
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As a patternmaker by trade, all looks great on the pattern! Just make sure it is gated sufficiently, good rule of thumb is to have 3x the aluminium volume of the casting. Two thirds in the risers and gating, and the one third the casting itself. This helps hold the heat needed for the casting to be fed in it's entirety. Did you account for shrinkage in this case?

carsonsylvander
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I don't suppose you cast two of these did you? I'm in need of one....

PhilClark-chwm