Does anyone know what the corrosion is on this MIG spool

magnethead

Hi Just noticed some weird corrosion on the spool that feeds my MIG, is this normal? should I take the wire off the spool when not using the MIG for long periods of time? It's along the channel that is pulling the wire on the outside
Thanks

Gen.Zhukov

Tbh, I can't see much corrosion there at all. If you're using M/S wire there may be rust dust that builds up in the tube before the feed-roll and gets carried onto it. The other possibility is that it's some of the copper coating is coming off the wire which is normal.

Not really a problem as such as the feed-roll is way harder than the wire going through it.

Personally I would take the coil off if not using for a good while, or at least wrap the coil in a plastic bag with a sachet of that silica gel stuff in it.

magnethead

Thanks for the advise, yes, it was the little grey buildup on the feed roll I was curious about. I guess I could just remove it and clean it up.

Thanks again