The previous owner might have been doing an outdoors welding job - some people will use flux core with gas to double up on the shielding. It doesn't work that great because the flux gasses coming from the core are meant to react to oxygen, which will be unavailable with the co2/ar, so some of the chemicals may end up contaminating the weld. There is, however, a flux core wire called "dual shield" that is meant to assist with shielding in windy areas.
I have always just used a board of some sort to minimize the breeze and turn the gas up a little on the regulator.
I have always just used a board of some sort to minimize the breeze and turn the gas up a little on the regulator.
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