Raised beds with old roofing sheets

My neighbour gave me an awesome idea how to build raised beds with old roofing sheets. Corrugated roofing sheets are relatively easy to come by and sometimes you get them for free. So I had the idea of building raised beds with roofing sheets and use starposts for keeping them upright.
But my neighbour made it far better. She bought second hand hardwood for the corners and screwed the sheets on, very simple but far cheaper than the starpost method.
I pondered the idea a bit around and I will make the corner posts at least two meters high and connect them at the top for easy netting and trellising. The only thing I now have to decide is weather I leave the sheets entire or half them and construct hip high beds. The latter would have the advantage that I could build the beds very much in fashion of a huegelbeet. (My huegelbeds without a surrounding did not work out, it was on top of the soil)

I'm a little confused by your description. Are you talking about making raised beds that are two meters high straight up?

It seems like she is talking about a basic raised bed with corner posts that go up 2 meters to attach netting to.

To the OP: I have seen many videos in which people have used corrugated metal for raised beds and raised wicking beds. Most of what I've seen has been from australians. Here in the US, a lot of corrugated metal sheets are galvanized and that type of coating is a bit toxic. If you have galvanized metal, I can't say exactly how "bad" that may or may not be. I am no expert. If it's not galvanized, I personally would probably use it unless it was aluminum. I don't like aluminum. If you want to see some examples, there is a user on youtube named rob bob. He has many beds like that in his yard. That's the only user I can recall at the moment.