General Fabrication
In general metal fabrication, 0.045-inch disc diameters are common choices. With thinner materials, an operator may want to choose a 1-millimeter disc instead for greater precision, less heat generation, and fewer burrs that will require removal before welding. The choice of grain will likely depend on the material composition of the workpiece — higher-performing grains for structural steel and difficult-to-cut metals, contaminant-free discs for stainless steel.
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