Dialing In Your Sandblast Metering Valve
Getting your sandblast metering valve set correctly is honestly the difference between a productive afternoon and a total waste of expensive abrasive. If you've spent any time behind a blast nozzle, you know the frustration of seeing huge clumps of sand drop out of the hose or, worse, having nothing but air come out when you're trying to strip a rusty frame. It's all about the mix. Think of the metering valve as the carburetor of your sandblasting pot; it's the component that decides exactly how much "fuel" (the abrasive) gets mixed into the "air" (the high-pressure stream). ...