Another thing to think about is I am 100% guaranteeing that any machine you design and build will end up getting modified in some way after you get your first cut chips.

I think I spent the first year either pulling my machine apart and making minor alterations like packing the interior of the extrusion and bolting the gantry beams together to increase rigidity and reduce harmonics, to bigger alterations like removing the old Z axis and replacing it with a stronger C beam and replacing the aluminium gantry uprights with strong steel ones. This reduced a LOT of design problems with my original build yet I’m still not 100% happy.

What I mean is, until you get some experience under your belt it’s hard to know what you want from what you NEED to make your machine do what you want. I’m still very much a novice yet have managed to improve my machine a lot over the last few years.