Problems with the Z-axis

[bader357]

Hello,
I experience imprecision on my Z-axis - basically, several first layers have incorrect height. I have document the issue in my blog post: https://blog.honzamrazek.cz/2019/08/test...egoo-mars/

Do you experience a similar problem? What could be the cause?

I have the same problem but no solution
Only I found this in the "ChiTu Mainboard SpecificationV3.0.9.gcode"

;¡¾step related parameters¡¿After the parameters are set, please print a cube, then use the ruler to measure the size to confirm that there is no problem with the parameters.

M8010 S0.000625 ; ¡¾Z mm value per step¡¿ Calculation formula: lead / ((360 / 1.8) * 16).