@2000thy said in problem mesh bed. Delta printer:
M558 P9 C"20.io0.in" H10 F1000 T6000 ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X0 Y0 Z3.5
What probe are you using? If it's a bltouch, than it has an offset from the nozzle. If the effector has a varying amount of tilt based on XY position, than the distance between the nozzle and probe will change as well, meaning your trigger height will be incorrect at certain positions.
This is why using nozzle contact probes for delta printers is strongly recommended.