I was misinformed when I bought my MIG welder. I was told that I could use it to patch sheet metal. Now, after blowing through a lot of old scrap pieces, I find that that's probably not true. What I should have bought was a TIG welder so I could use .023 solid wire. I've scoured the internet and have concluded that .023 fluxcore doesn't exist but found "Fabshield 23" which is actually .030 but looks like it might respond more like .023. Can anyone set me straight on this?