I keep over-packing my molds, any tips for a lighter touch?
I learned about their different sand mixtures that cut down on defects. Half the guys here say we should try mixing like them, but the other half says our local sand is fine and changing could cause problems. Do you ever pick up ideas from visiting other shops, or is it better to just focus on your own yard?
Everyone says to pour steel super hot to avoid cold shuts. I've found a slightly cooler pour actually reduces shrinkage cracks in my jobs. Does this go against everything you were taught?