Clark Plasma King 50 plasma cutter, bit heavy! for model engineering, but maybe you are interested. Would be a good way to rough out frames etc.
I bought it to restore a 50's van to make the work a little easier so it's been used very little. Can cut through 10mm steel!
See the spec and current prices here:
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Also pictures here:
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Needs a decent compressor to run it and a 40A single phase 240v mains supply. £860 when new, looking for £500
thanks
Lee