Yeah,

Here's a 251Si video by that same gal, but it's not the one she did with the spoolgun on aluminum, which doesn't seem to be on her Channel anymore. Maybe there was a copyright violation, for the music or something.

https://www.youtube.com/watch?v=byTv0gOTim8

Anyway, the 251Si can MIG aluminum, but not TIG aluminum.

You may one day wish to get an AC/DC TIG unit, which can TIG aluminum. They can now be had for under 1K, and some are even digital, at that price.

So, it's a very good time for consumers in the TIG marketplace.