Desktop 1000 mm x 600 mm Gantry Router

[Soyb]

I put some temporary plates on the Y carriages and used the cross beam to check the difference between each end, using some feeler gauges the gap is virtually identical at ~ 0.4 mm, the gap seems to be with the edges of the extrusion and the T slot plate so I am happy that the rails are square. I am going to put 1 mm pockets in the gantry side plates for the ball screw nuts, carriages and cross beams, so I can accommodate .2 mm either side for the X axis cross beams. Phew, first issue wasn't.