Rings Of Torture Test

thingiverse

If your machine prints perfectly without a brim, you know that everything is dialed in flawlessly - from slicer settings to stepper calibration on all three axes, extruder calibration, bed leveling and warpage, auto-leveling, temps, and perfectly acceptable wear limits on the machine. This print consists of five interlocking rings, each 100mm across, 5mm thick, and 30mm tall, fitting snugly on a 200mmX200mm or larger bed. Digital calipers can easily measure all three axes. By printing this test, you'll also spot any problems in the X, Y, or Z axis - bad bearings, worn wheels, adjustment issues, belt problems, ringing, vibration, Z and/or Bed wobble, and mechanical issues - as well as pinpoint their location on your machine. Several sudden gaps will test jerk, acceleration, and stringing issues. If your bed isn't level, it won't hold the print in unlevel areas due to its thin 5mm thickness, but that's by design. Don't try to "fix" this with a brim. By analyzing the worst areas of the print along each axis, you'll not only detect problems, but also generally pinpoint their location on your machine. The rings are designed to orient their centerlines along the X and Y axes for printing. You could rotate it 45 degrees in your slicer to test each corner bed level, though that would reduce its usability in locating mechanical issues.