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Message: <blockquote data-quote="Tazza" data-source="post: 10992" data-attributes="member: 82">I believe you can get units with a compressor built in but they would only do small jobs. When the machine is working it does use a fair bit of air. Do your self a favor, hook up a good sized compressor to it, it will save you having to wait for the compressor to catch up before resuming the cut.Remember plasma cutters are VERY power hungry. Make sure you have enough power to allow the cutter to work and the compressor to cycle on and off without interrupting the plasma flow. My cutter and compressor are on the same circuit. I need to shut the compressor down before a cut or i trip the fuse or the compressor kicks in and my arc stops (just for a second).Plasma cutters work best on flat sheet, different thicknesses in one cut gets a little tricky same with round bar.With that said, i love my plasma cutter, its fast and you can weld rite over the cut unlike oxy/fuel cuts and it is a bit noisy.</blockquote>