So I had this little fluxcore welder that I played around with a little the first time I redid my truck. Now i'm using a MIG with argon/CO2 shielding gas but I still wonder about that little fluxcore. I have been hearing that when welding with a fluxcore, all the welds must be sandblasted or rust will creep in from the flux. Is that true? Sounds logical to me.
any insight?
thanks.
Colin
