Spent 15 years thinking a hotter pour was always the answer for thin sections
Back in my first job at the old Mid-State Foundry, the foreman drilled into us that if a mold wasn't filling right, you cranked up the heat. I ran with that for over a decade. The moment it clicked was watching a new guy, fresh from a trade program, adjust the gating system on a stubborn gearbox casting instead of just turning up the furnace. He got a clean pour at 2500 degrees Fahrenheit, where I'd have pushed it to 2700 and burned out the sand. It was a real 'oh, duh' moment about controlling flow over brute force heat. Anyone else have an old habit from a mentor that you had to unlearn?