Just assisted a friend with the install and setup of his new table. Found rather quickly that the Hypertherm 65 didn't like any moisture what so ever...LOL. Showing errors 50 & 30 IIRC. Considering all that goes with the initial purchase and installation of a new setup he did not have a lot to spend on a dryer. He did what many have done, purchased a unit from Harbor Freight with total cost not including all necessary fittings/valves etc. around $400 before shipping. Now, I know many will question effectiveness/quality but in my personal experience this plasma has had no further errors since the units installation. So far a little over a month of steady use and no issues. Something to consider if cost has one in a bind.