spectrum 375 and psi???

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I recently got a 375 and am starting to use it alot, however i am having issues with quality cuts and slag.  The psi is set at millers req around 25-30 psi, however when i turn up the psi to around 50-70 it seams to work alot better.  I have used a thermodyne and it set it psi at 75.  Will uping the psi on the mikker hurt it?  also what are your settings on this?  I cut mild steel around 1/8 to 1/4.Thanksshawn
Reply:Originally Posted by dapozerI recently got a 375 and am starting to use it alot, however i am having issues with quality cuts and slag.  The psi is set at millers req around 25-30 psi, however when i turn up the psi to around 50-70 it seams to work alot better.  I have used a thermodyne and it set it psi at 75.  Will uping the psi on the mikker hurt it?  also what are your settings on this?  I cut mild steel around 1/8 to 1/4.Thanksshawn