Small mig welder

harrisonm said
Let me encourage you to NOT try to learn how to weld with flux wire. I know really good welders who struggle to get nice welds with flux wire. I ran out of gas in the middle of something once and switched to flux wire. I struggled with it for about 20 minutes and then went and filled my bottle.
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Shielded or flux wire has its place. While there is "general use (or Farmer grade)" flux wire, a lot of them have specific applications and use so you might look into what you have. Also, on my machine you have to change the set it up to run flux wire. It doesn't make a pretty weld for sure.