Onyx Pillars Test Print


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About the Onyx Pillars Test Print

The Onyx Pillars Test Print can be used to diagnose printing issues on the Mark Two. This test print is significantly more effective at diagnosing wet Onyx than the Wet Plastic Purge routine. In addition, the Onyx Pillars Test Print can help diagnose under-extrusion or several other printing issues.

The Onyx Pillars Test Routine will run for about 15 minutes and then will pause to allow you to inspect it. Wet plastic or under extrusion issues may be visible at this time. As with any paused print, after inspecting the part, you will have the option to stop the print or to resume it. Resuming the print will allow it to run for another hour or so and may provide more definitive results as to the quality of your plastic and prints.

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Running the Onyx Pillars Test Print

The Onyx Pillars Test Print is a utility that can be run directly from your printer.

To run the Onyx Pillars Test Print:

  1. Apply glue to your print bed as shown in the picture below and place your print bed into your printer.



  2. Press the menu button in the upper right corner of your printer's LCD touchscreen.



  3. Select the "Utilities" tile from the available options.



  4. Select the "Test Prints" tile from the available options.



  5. Select the "Onyx Pillars Test Print" tile.



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Using the Test Print as a Diagnostic Tool

The Onyx Pillars Test Print can be used as a diagnostic for several issues on the Mark Two. See below for pictures and descriptions of potential failure modes for this part and what they mean. If you experience a failure mode that is not shown here, please Contact Support for additional assistance.

  • Good Test Pillars: Walls and floors are well-formed, lacking gaps or stringing. Plastic is uniformly distributed and all shapes are dimensionally accurate.



  • Pillars with Wet Plastic: Stringing between pillars or off of walls.
    Solution: Pull several feet of filament off of the spool and discard it. Reload the plastic and run the Onyx Pillars Test Print again. If the test print still shows signs of wet plastic, discard the spool and try a new one.



  • Pillars with Under-Extrusion: Gaps in walls or floors.
    Solution: Change the nozzle and check for any jams in the drybox, extruder, or print head.



  • Pillars with Dimensional Inaccuracy: Circles are wider than tall, or vice versa. Square pillars look like rectangles. Plastic is not evenly distributed.
    Solution: Check the belt tension and the bearings in your pulleys. Dimensional inaccuracy on this print can be a sign that the motion system on your printer needs to be calibrated.



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