Ln7

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I have a miller big 40 and was wondering if i can use an LN7 or the miller or hobart version  of them on this machine the big 40 is a CC    DC  machineLincoln Pro Core 125Lincolin sp 100Miller Big 40Lincoln Idealarc SP250miller matic 212http://www.facebook.com/hdwelding?sk=wallwww.hdweldingbeds.com
Reply:No. The LN 7 is designed to be used with a CV power supply IIRC. You could use a voltage sensing type feeder, LN25, Miller 8VS/12VS, Super S32P etc. Note that they generally don't run small wire short arc mig well at all on CC. The feeders can't adjust wire speed fast enough to mimic CV. You can run larger FC wire in spray mode  fairly well, but then vertical and overhead becomes a PITA.If you are looking for "normal" mig for thinner material you really need to look at a CV capable power source with feeder, or a dedicated stand alone mig..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan