Wall & Gaps thickness test Deprnding of the settings of your slicer & capability of your printer there is a cutoff of the apparition of thin elements or some problems in print quality This test is design to be rapid to print & show the disaprance of walls & gaps at certains small thickness Wall & gaps start from 0.1mm to 1.5mm thickness, round holes are positioned at 0.5mm, 1.0mm, & 1.5mm to help identfy what size print or dose not print.