Moire test
thingiverse
Print a test to check for moire, using a rotated cube to induce slow movements along both x and y axes. If diagonal or vertical ripples appear, modify your DRV8825 drivers with diodes as instructed in the following post: http://www.engineerination.com/2015/02/drv8825-missing-steps.html
Download Model from thingiverse
With this file you will be able to print Moire test with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Moire test.