Sheet aluminum cutting and engraving?

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I haven’t done it personally, but every now and then someone in the forums posts a project in aluminum. Here’s a recent example:

3/16 Aluminium plate - snowmobile bumper sides

Hey all, thought I would post my success, cut the sides of a bumper I’m building for the wife’s sled(snowmobile). Previous methods were plasma, then grind and finish everything. This one will get a light file/buff where need and straight to sandblast/powder coat. I have to say, this is why I bought this, and it performed as advertised. Details: Inner details - 300mm/min federate, 0.5 pass depth. Outer details - F360 1900mm/min, 1mm cut depth. It worked on the outside cuts. I would recommend a s…