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3. Sure, cutting metal can be done with a cutoff wheel and a pneumatic grinder, but there are much better ways to get the same job done. The most versatile, simplest, quickest way I’ve found to cut anything from 20-gauge sheetmetal to ¼-inch plate is by using a plasma cutter. This MicroCut 301 from HTP has served me well for many years and has handled any cutting chore I’ve thrown at it. Its compact, lightweight size, thanks to advanced inverter technology, doesn’t match the punch that it packs with an infinitely adjustable cutting amperage from 5 to 25 amps using 220 volts.