Now that I have an Ultimaker 3 Extended, I no longer need my old printer. Prior to selling it, I would like to configure it to work with Cura.
The bed is 200 x 200 mm, and print head 1 can reach any point on the bed. Print head 2 is 31.0 mm to the right of print head 1. Thus, print head 2 can not reach the leftmost 31 mm of the bed, so it has a smaller print area than print head 1. (Attempting to extrude with head 2 when the head is all the way to the right would extrude to the right of the print bed.) Thus, when printing with Extruder 1 only, the print area is 200 x 200. When printing with dual extruders, or with extruder 2 only, the print area is 169 x 200.
Unless I am mistaken, there does not appear any way to correctly configure this in Cura. Apparently, the best I can do is indicate that the bed is 231 x 200, which would be correct for printing with Extruder 1 only or with dual Extruders, but would not be correct when printing with Extruder 2 only.