I’ve been running the LR2 for a week now doing little bits and bobs, nothing with precision or square corners. I started cutting out a box for the controller but then quickly realized how out of square the machine was. I read through how others have squared it and was trying all sorts of things but have hit a road block.
My Technique for checking square:
- Installed a fine point scribe onto the router board with a clamp and some hot glue in a tight fitting hole.
- Resting the gantry on some parallel wood so its parallel to the table.
- Reset the LCD to release the stepper motors
- Engage the Z axis steppers by moving up 1mm
- Remove the parallel boards and pull the router to the end of the table against the belt tension blocks
- Gently holding it against the blocks I engage the Y axis
- I move X to the left and Zero X and Y
- Plunge down with the scribe to make a tiny dent in the MDF, using a flashlight I circle the dot so its easier to find.
- Travel 300mm to the right, and 400mm in the Y
- Plunge again and mark.
I should be measuring 500mm between the two points but I am at about 495. I incrementally added spacers to the left side all the way up to .75" and it did not seem to change my results.
I then undid the Z/X clamps and re-tightened. I ensured the left side Z tubes were pressed against the table, then I adjusted the Z/X clamps on the right side and set the spacing to the table with feeler gauges to 0.114" on both tubes. Tightened the fasteners and completed steps 1-10 with the same result.
If I set the left side Z rails against the table, on my last run I noticed if I set my Z tubes on the left against the table there is a small gap after I get to the 400mm.
What am I missing?
Here is my setup table top is 32" x 48"