So I opened the
#gcode file and identified the layers (luckily
#cura comments out every layer start). I took note of the last printer layer height (checking the only instruction with a Z in it) and removed from the first layer to the 21st. I left in place all the initialization dance and added, between it and the start of the 22st layer, an instruction to move the print head to the previously discovered Z height. I saw the gcode says
#Marlin #firmware, so I searched in the Marlin's documentation:
https://marlinfw.org/docs/gcode/G000-G001.htmlThe selected instruction in the screenshot is the one I added. (Continues...)