With the offset for the first print head saved from this step in the previous stage continue with finding the offsets for the remaining print heads.

Set the bed to 100C.

The remaining Z-offsets are relative to the first print heads offset.

Select the print head, T1.

Move it to the centre of the build plate, co-ordinates (200, 150).

Place a piece of paper between the nozzle and the platform. Move the platform up to the nozzle and stop once it grips the paper.

Note the Z-position.

Repeat this for any remaining print heads you have installed.