The 211 would not be my first choice for 1/4" and thicker. Can it do it? Yes. It will require perfect joint prep on clean metal with 240v input on a large breaker and .035 wire. And only 20% duty cycle.
I like my 211 a lot. It's my go to for 1/8" wall tube and general here and there fab. But it's not intended for large welding jobs. If I could only have one MIG welder, I'd have a MM 350P. Since I understand that's not reasonable for most folks, I'd have a MM 252. If you are just welding sheet metal and various brackets and such, get the 211. They are good little welders if you understand their limits.