Editing Step 3 —

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Raise or lower the Hotend in 0.1mm increments until the friction between the paper and nozzle is the same as what the friction between the paper and the nozzle of Hotend #1 was.

To compare again you can send a T0 command to switch back then move the gantry to the Z value from step 1 (in our case 1.9mm).

Once happy, make a note of the Z position of Hotend #2.

In our case this was 2.10mm when the paper began to be gripped, but this value will likely be different for everyone.

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