@Sink:
I have no Z Probe .. what would you recommend?
It's possible to use the approach I described without a Z probe. Set the Z probe type to 0 and then at each probe point, DWC will prompt you to jog the head down until it just touches the bed.
Regarding Z probes, there are lots of different types available. Here are some of them
The IR one that I make and you can buy from me, duet3d and Filastruder. It's small and light but a bit fussy about bed surface. See https://miscsolutions.wordpress.com/mini-height-sensor-board/.
For a delta printer, the delta effector with built-in nozzle contact probe that we are about to release. See https://duet3d.com/wiki/Smart_effector_and_carriage_adapters_for_delta_printer.
Piezo sensors or force sensitive resistors (FSRs), either mounted within the print head or under the bed supports. There are threads about piezo sensors in this forum.
Inductive sensors. Big and heavy compared to most other types, and most types are not very good with glass beds over aluminium.
BLTouch and its clones. Has patents applied for and is not open source, so against the spirit of RepRap.
Capacitive sensors. Not recommended because of temperature and moisture sensitivity.
