@Q2101 said in New user: Rebuilding an older printer with Duet 3 mini 5+:
to the right of the nozzle along the x-axis and slightly in front of the nozzle along the y-axis.
To the right of the nozzle would make X positive. In front of the nozzle would make Y negative.
Typically -X to the left, + X to the right. -Y in front, +Y to the back.
If your setup is different than this, you may need to change the motor direction of rotation, and consequently the directions of movement in your homing files, and the definition of the endstop depending on which end of the axis the endstop is located.
This may explain the weirdness in movement you seem to be having.
Based on your config the endstops would be located on the left side for X and at the front for Y. Is that the case?
Please also post your homeall.g
It would also help if you post the results of M122 and M98 P"config.g".