Flat test square

thingiverse

This is just a flat square to test the bed level. First, go into Cura and place it right in the middle of the screen. Save it as a standard quality print job using 0.2mm layers. You'll see two lines: one for a single layer at 0.2mm and another for five layers also at 0.2mm. Next, send the print to your machine and have it start printing right in the middle of the bed. The goal is to get a perfectly flat print with no warping or sagging. Once this initial test comes out looking pretty good, you can begin working on your auto-bed leveling procedure.