I was really interested in CNC some years back and then life kinda got in the way of things and forget most of what I read back then. I'm getting the itch to try it again and found a sketchup file (probably missing some screws and brackets) of a machine plan I made back then using all off the shelf parts, will be 500mm extrusions belt driven for the x and y, with 250mm screw driven for the z. Trying to keep it affordable. This will be for engraving, light routing, and possibly mount a laser. Think this will be sturdy enough? Would I be better finding a build that has already been proven? I feel like 1000x1000 would be a better size, and thought I chose that before. Would I have thought that would have too much flex?