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Update: I finally switched from a 6-inch riser to an 8-inch on our main pour line after a spill last week.
I always thought the bigger diameter was overkill until I saw how much smoother the flow was and how it cut down on splashback and waste, so what's your go-to setup for high-volume aluminum pours?
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emery_taylor13d ago
Hold on... bigger risers just hide a flow problem you should fix at the source. That extra diameter is a band-aid for bad gating or poor metal quality. You're adding more hot metal in the system that can cool wrong and cause other issues. I've seen shops chase bigger risers and end up with worse shrinkage because the thermal mass is in the wrong spot. My go-to is always to tune the sprue and runners first before just making everything bigger.
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matthew86413d ago
Wait, you've actually seen shops make things worse by just making risers bigger, @emery_taylor?
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