i am still struggling with my 2.x laser build. Most parts are working (waiting for the tube) but my z axis table does not work as it should. I use the solution with the nema on the bottom and the lo x7 controller. When i try to move my z table up and down it only works for some milimeters before it gets stuck. The table seems to be level but i do not now how much accuracy is needed to prevent binding. If i remove the large belt from the z table and check movement of the nema which is then only attached to the small pulley and the first rod everything works fine. As soon as the other rods are involved things start to get stuck.So where do i start? How did you align your rods? If i try to make them perpendicular i need some force to get them in place? Any hints are welcome ...
Thank you very much,