Good job going on the roof to get an actual view of the problem and not just relying in instruments or tests of the interference. We had a similar issue at our facility where a machine would consistently have a high amount of defects at the start of the shift but would then run great all day and overnight. On inspection of the cell, the defects were kicked out based on an automated vision inspection. The rising sun through a plant skylight each morning would change the light profile on the part causing false rejects. The solution was dark shielding on the whole cell and the problem did not re-occur.
That's a case of deductive reasoning I can follow. But I'm wondering about the zillions of commuters who are glued to their cell phones riding trains every morning and afternoon rush hour. I'm assuming no impact on cell signal or it would be front page news and trending topics on Twitter. Any thoughts as to why this isn't a more regular occurance?
Fifty-six-year-old Pasquale Russo has been doing metalwork for more than 30 years in a tiny southern Italy village. Many craftsmen like him brought with them fabrication skills when they came from the Old World to America.
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