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Trusting my hands over the timer fixed our mold sand
Mixed sand by the book for years. Castings always had pits. One shift, I ignored the clock. Went by how it felt in my palms. Now every pour comes out clean.
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jason_jenkins347mo ago
Seems like a stretch to blame the timer for years of bad castings. Foundry humidity changes day to day, and raw sand batches are never exactly the same. Your hands might just be catching a variable the rigid schedule missed. Could be you finally got a consistent silica shipment that week.
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benlewis7mo ago
Blaming the silica shipment is a new one. That timer has been running fast for years, but sure, let's thank perfect sand. My casts were trash every afternoon, not just on humid days. Fixed the timer and suddenly have perfect molds, what a weird coincidence.
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rubys297mo ago
But a timer is the only way to keep things the same for the whole crew. What feels right to you one day could be way off for the new guy next week. A few seconds off on the mix can change how the sand packs, and that small error gets worse with every mold. Your good week by feel was probably just luck with the sand delivery.
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