3d printer not printing circles correctly I am having issue with my new printer it is not printing circles correctly although I have change firmware and stepping of motor
advise if anyone know the solution.
Possible causes for the printer not printing correct dimensions:


Incorrect number of steps/mm in firmware settings
Belts are not tight enough
Pulley slips on the shaft


Looking at the picture, I would go for the first case, because distortion looks regular. Try checking microstep settings on your board, and settings in the firmware.