Hi all,

I'm new here on the forum. Im thinking about constructing my own machine, but i don't know a lot about it.

I'm thinking about making a machine with a volume of 700x500mm.

I sarted to look around for aluminum profiles, and then for informations about the strength of the aluminum profile and which one is better for my machine.

So, if you could ilucidate me when do you use the 20x20, the 20x40, the 30x30 aluminum profile....... I would be grateful

Best regards