test pattern.

thingiverse

A debugging test pattern for Printrbot issues is shared, potentially helpful for others. The green example uses PLA at 0.1mm slicing while red ABS is at 0.2mm. Multiple .stl files are provided, including text-only and larger ones testing Y axis motion with zigzags. Slic3r often issues with the latter. Troubleshooting first layer adhesion is eased by round shapes like X.stl. Calibration is aided by 100and50sqr-b.stl, and hole sizes are tested in holetest.stl. Printer rod perpendicularity is checked using Rodtest.stl. Test123456 checks cooling fan efficiency, while Ribtest (aka z-wobble) detects variable Z lift and over-extrusion. Ambient temperature affects motor mount softness. A cylinder/tube pattern in Ribtest helps identify over-extrusion and ribbing. The center hole section reveals ribbing patterns. Lastly, a 1mm walled tube top section should exhibit less ribbing. View ribbing test results here: http://www.youtube.com/watch?v=Fu6An4-wFZQ