what wire size to use for lincoln 180

what wire size is best for a lincoln 180? I has .025 solid core now and was thinking about going up to .035


.025" is fine and probably the best choice for really thin metal like auto body panels.

but for thicker stuff i like to use .035" wire.
there is something called "current density" and there is probably a really long definition but basically, you just cant get optimum penetration on thick metal if the wire is too small.

Some folks like to just use .030" for everything as a " one size fits all" solution.

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