What is the best 3d printer for beginners

There are many approaches to automatic bed levelling. The best systems use steppers to level the bed.

In my experience, mount your printer on a solid base and don't move it around. Levelling becomes an 'only if you disturb the setup' or 'my extruder tip is badly worn' exercise.

Neil

I have bought a sensor for automatic bed levelling. I didn't instal it yet because I have only levelled the bed 3 times since i bought the printer. The first time of use, the next day and after some months once to check if there was much difference.

Actually, in my experience, automatic bed levelling works really well and is definitely not a software fudge.

Perhaps it is the term levelling that causes some confusion. Levelling the bed, like when levelling a lathe, does not actually level it with reference to the earth, but instead merely ensures a constant distance between the bed and the extruder.

Automatic bed levelling constantly monitors the position of the extruder over the bed and adjusts the distance between them. Whether this is done by raising or lowering the bed by means of stepper motors or whether it is done by adjusting the vertical position of the extruder is immaterial, the net effect is the same.

As mentioned in an earlier post one of the best, and actually the only change, that I have made to my printer is the installation of Crealty's CR Touch auto bed levelling probe along with the firmware to support it.

At the start of a print, this probes the bed at various points to determine what offset if any needs to be applied in order to keep the relative distance between extruder and bed constant while printing.

Clive