July Puzzler

This month's puzzler is another print anomaly that some of you may have seen before. The below picture of our new Viki 2.0 controller enclosure shows a "shadow" image of the cable gland thru-hole on the bottom surface. What is causing the shadow image? Reply with your answer below and the first correct response will receive a 5lb spool of PLA. Good Luck and Happy Printing!


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