Hi @josedgm
you needn’t to be concerned. The pressure to the center part is less than you think. But, of course, you need to consider, that the area you can precise the angle of x- and y-axis is probably about 88° to 92°, not more. If your angle is out of this area you should check your general construction.
To be honest, I am using a number of different ways for precision, stability, reducing vibrations etc.
- this tool to precise the angle of x- and y-axis
- the center part and the additional clamps for the precision
- the “cubes” between the clamps for stability. These cubes are helping a lot to stabilize the core and the clamps, really a big advantage!
- additionally my control supports autosquaring (electronically) so the angle is exactly 90°. After building the MPCNC I had - mechanically - an angle of ca. 91° and with the tool I got exactly 90°. Using the autosquaring func this tool is mostly for stability.
- additional clamping block for a thread rod nut (anti backlash nut) - this really reduces vibrations! I mentioned it here: Solving Z axis lifting problems, stepper losses
- I printed the MPCNC with stronger material: mostly CPE HP100 and ASA - really a huge difference to the standard PLA!
Ciao DJ