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The build plate in Cura is a "virtual" build plate that is "MachineWidth" x "MachineDepth" as you set them in Machine Settings. The 0,0,0 is usually at the left front corner for most cartesian printers. When Cura generates a gcode the X Y Z locations are calculated from that origin. Cura will take into consideration the distance between the nozzles and note the areas of the build surface that they can't get to.
When a gcode file is read by (most) printers, the printer puts the 0,0,0 of the gcode file (the virtual build plate) at the Home Offset 0,0,0.
The Auto-Home position is measured from the Home Offset 0,0,0. That means that when you Auto-Home the print head it should read something like X=-5 Y=-3 Z=0. That is where the nozzle is in relation to the Home Offset 0,0,0. I know it isn't intuitive, but it's the way it works. The Auto-Home 0,0,0 is not absolute, it's just a position where it is up against the switches. If you change the Home Offset position then you change the location of the Auto-Home position.
For a dual head machine there is a distance between the nozzles? That should go into the Machine Settings on the Extruder tabs.
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GregValiant 702
The build plate in Cura is a "virtual" build plate that is "MachineWidth" x "MachineDepth" as you set them in Machine Settings. The 0,0,0 is usually at the left front corner for most cartesian printers. When Cura generates a gcode the X Y Z locations are calculated from that origin. Cura will take into consideration the distance between the nozzles and note the areas of the build surface that they can't get to.
When a gcode file is read by (most) printers, the printer puts the 0,0,0 of the gcode file (the virtual build plate) at the Home Offset 0,0,0.
The Auto-Home position is measured from the Home Offset 0,0,0. That means that when you Auto-Home the print head it should read something like X=-5 Y=-3 Z=0. That is where the nozzle is in relation to the Home Offset 0,0,0. I know it isn't intuitive, but it's the way it works. The Auto-Home 0,0,0 is not absolute, it's just a position where it is up against the switches. If you change the Home Offset position then you change the location of the Auto-Home position.
For a dual head machine there is a distance between the nozzles? That should go into the Machine Settings on the Extruder tabs.
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