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Old 03-01-2012, 08:22 PM
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Miller Spectrum 375 Plasma

Anyone have any experience with this Miller Spectrum 375 machine? My neighbor has one for sale and I am really interested in it but have NEVER actually touched a plasma before testing this one out today. Anything I should look out for, any good reads on these machines?

I hooked my air to it, plugged it in and grounded a piece of scrap 3/16 then proceeded to cut. the on/off switch fires the torch first click, then turns off the torch leaving the air on second click, another click and the air shuts off, normal?

also, I do not want to buy a lemon, or over pay so what do you think its worth? thanks for any help/suggestions!
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Old 03-02-2012, 04:15 PM
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ok, i dl the owners manual and parts guide, then read some tips AFTER TESTING. my first mistake, besides testing without proper instructions or guides was the ground wire has broken insulation in a spot or two and i handled the sh1t out of it while plugged in, luckily no death or injuries but please do not try that at home. my next mistake, i cut the test piece while holding the torch about 1/8-1/4" from the metal. common misconception as i have read, this is a drag torch and cuts better being drug along the surface. I also learned about the 20 seconds of air after the cut and suggested techniques for cutting.

there is not as much rocket science to this as i had thought, but as with anything, it helps to know the steps. anyone have any cool home made jigs they use for cutting patterns? it mentions that its better to not use a conductive material as it prematurely wears out tips but can be used. what do you guys use?
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Old 03-02-2012, 04:38 PM
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I have that machine... I use mine everyday....great machine.. That make two tip's for that machine... One you can drag and one your not suppose too..

The air at the end of a cut, Is to cool the tip down..
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