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| Material Thickness | Voltage Setting (A, B, C, D) | Wire Speed (1-10) | |--------------------|-------------------------------|---------------------| | 18-gauge sheet metal | A (Low) | 2-3 | | 1/8” mild steel | B or C | 4-6 | | 3/16” mild steel | D (Max) | 7-9 | Century 85 Amp Dual Purpose Wire Feed Welder Manual