Quote Originally Posted by Bravin Neff View Post
I'm looking for your comments please. This would be a gantry style CNC router. The Gantry is 150mm x 75mm steel rectangular tube, and the frame is 75mm x 75mm square tube. 1610 ballscrew, 20mm Hiwin HGH20 or similar.

The point of this design is to put the ballscrew directly above the linear guide, with the gantry mount sandwiched between the ball screw and linear guide carriages. I do not believe I have seen this before.
you're on to something there but as the otehr members said the weak point is the upright plate with no bracing for side to side loads. here's the same concept with one form of bracing added to what you initially drew
i like the idea it's very clever & done right could be quite sturdy