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The main reason for tig is small stuff, exotic stuff, and stuff where you just want the welds to be gorgeous, eg if you're going for that nasa look.

The goal for mig is to hot glue some metal together. My friend does woodworking and loves making legs out of rebar/etc with the mig welder.

I should have got MIG then. A nice weld is beautiful to look at, but my needs are more practical.

Still, I'll give it a go. My son wants to build a "mecha arm" with all sorts of spy features. This might be a good excuse to learn how to use it.