EnderExtender.com – Ender Extender™ 5 Installation Guide
Page 36
Note the line M211 S0; disable end stops
We need to ensure this line exists after G28 line.
These settings will allow the printer to print full size on the larger bed. However, depending on the Cura version, you
may have another issue where Cura is forcing you to a small printable area defined by the Ender 3. This “feature” was
introduced recently in 2020, and it is rather annoying. This is called the Keep Out area. See video below.
https://www.youtube.com/watch?v=Il1sierB4Yk