a question with many many possible answers.
I have a bandsaw, grinder, throatless shear, bar cropper, hacksaw and jig saw all at my expense. Neither one is better than another they all do completely different jobs despite the fact they all cut metal
I prefer horizontal band saw personally if I’ve lengths of box section to cut.Sorry should have been more clear. the best way to cut box section
Why?still use a hacksaw rather than an angle grinder.
Why?
Yes and I agree noise and sparks are something we could do without. I wouldn’t personally choose a hacksaw to cut box section. If all I had was a grinder I’d deal with the noise and get it cut.It's not chucking sparks everywhere, I'd guess being the answer.