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Hi! I've finished my mpcnc and it's great!
I've tuned it a lot to get rid of problems and it's almost ready. Right now I just have two problems:

  • The Z rod screeches a lot and gets stuck many times. How can I resolve this? Would lubricating it only be enough?
  • Even though I've used the "standard" firmware for mpcnc when I try to calibrate making eg a 100mm square, I'm having systematic errors having a square of 98x98mm.
    Does anyone know how to solve these problems?