stryped fired this volley in news:5c155cc8-f5f3-
:

can I bring the wire back to life?

It's easy, Stryped.

Unroll all of it. Get some lightly oiled 0000 steel wool, and scrub off
every bit of corrosion and rust on the wire as you re-roll it.

When you're done, you'll have a nifty $500 roll of welding wire, and all
will be right with the world.

Or - just a suggestion - you could treat the welder and its supplies as
if they were tools, and not leave them out in the weather.

Me, personally, I remove the spool from the machine after use, baggie the
wire, then store it in a my rod oven.

LLoyd