Some of the software that comes with printers interacts with the CAD software and changes the CAD software supporting surfaces such as the deck and this can produce an interferece pattern on the surface. Rotating the orientation of the model can sometimes reduce this effect. Often the person printing the design gets too greedy and tries to print every part of the model at the same time instead of one cage at a time. I believe that more mentoring would be a good idea in this part of the hobby.