I bought a PT200dx almost a month ago, mainly to do aluminum. It's a badass welder but I am very disappointed in the pulse feature and want to upgrade to the 225LX if it's pulse works differently (which I believe Mark of tech support may have mentioned it was when I spoke with him on the phone).
The PT200DX's pulse feature is designed backwards and is essentially useless.
You set the pulse on current at the panel and the pedal sets the background current. Locking the welder at a certain high current (for a set pulse duration) and using the pedal to lower the off pulse duration is absurd. If you're welding near an edge or whatever and back the pedal way off you still get a huge blast of full power during the pulse on time.
I want to do the 30 day trade up program to a 225LX if it has a normal pulse feature. "Normal" being like Miller and Lincoln: the pedal or panel sets the pulse current and the background current is set to come down to a percentage of it.
Someone who owns a PT225LX (or an everlast employee) please chime in how the pulse works ASAP since I'm getting near my 30 days, Thanks.
Just for fun, some pics of aluminum:
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