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The Miller Spectrum 300 can cut very thin metal (pop can thin) up to 1/2". Mild steel, Aluminum, and Stainless. It has quickly become a toy in the shop, because it just uses shop supplied air, and a 30 amp circuit. The consumables are just two small parts - that if the plasma cutter is used correctly - will actually last a long time This tool is fast cutting and very accurate. If you use a straight edge, or a curved edge that is smooth, and just follow it with the plasma cutter, it will copy it very nicely.
To cut out various shapes in metal, I have found that I literally suck at free hand cutting. However, with a little creativity, I can make some nice cuts using a series of pre cut shapes to use as a guide. I just chucked up different sized tubes, and angle iron in my bandsaw, and cut off slices at about 3/16" or so. Now I can just hold them in place or clamp them down and run the plasma cutter tip against them. Note: the cut will be about 1/8" from the piece used as a guide, so by chasing the inside of the tube piece, I can get a much tighter cut than say if I used the outside. With just a few of these I can get a large verity of shapes.
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