Stainless steel fine grinding The FABRICATOR
No. 8: Grinding Inside Corners on Stainless. To finish the inside corners of a stainless steel component, begin by smoothing the weld with an electric angle grinder with an 80grain mini flap wheel. Then finesurfacegrind them using an electric angle grinder and soft discbetween an A160 and A16 grainwith a Trizact grinding wheel.