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Skeptical about that new ceramic foam filter for aluminum, but it saved a $5000 pour.
The foreman insisted we try it on a big engine block mold. Zero shrinkage defects, which we always got before. Anyone run into problems with these filters clogging up?
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faith_shah883h ago
Has anyone checked the filter after the pour? I had a bad clog once that caused a cold shut. It worked great for defects, but you have to be sure the metal is hot enough and clean. If it clogs, the flow can get too slow.
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jamief673h ago
Yeah that "bad clog" line hits home. I used to skip checking the filter after a pour, figured if it ran it was fine. But finding a totally blocked one after a cold shut showed me exactly how the flow got too slow. Now I crack it open every time, it's part of my routine.
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jordanmartinez3m ago
Man, I was the king of "it's probably fine" for way too long. I once ignored a filter so long the metal basically turned into a weird, sad sculpture in there. Took me an hour to chisel it out, felt like a real genius that day.
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