Stands for Z axis level
Print two copies of this thing and you could easliy level yout X carriage.
Put them close to the Z axis motors, they will engage the lower 8 mm X carriage rod
- Jog your Z axis up to 30 mm
- Place the stands on your printer
- Jog your Z axis down until both stands are engaged and pressed by the rod
- Lift Z axis 20 mm
- Remove the stands
- Done, you're ready to print or level your bed :)
Just remove support material.