Electronics Assembly Knowledge, Vision & Wisdom
Flying Saucer Over The Factory
Flying Saucer Over The Factory
At a new circuit factory an employee heard a thud and saw a bright metal dome-shaped object falling from the sky. Where did it come from?
Mysteries of Science

Dr. Gilleo
Mysteries of Science by Dr. Ken Gilleo
Dr. Gilleo is a chemist, inventor and general problem solver. Ken has been tracking industrial forensics and collecting case histories for decades. These cases are taken from the vast world of industry and commercial enterprise.

Check out Dr. Gilleo's eBook, 100 Mysteries Solved by Science. We hope you enjoy these case histories. You need not be an engineer or scientist to understand the problems and appreciate the solutions.
Transcript
At a new factory, circuits were made by printing conductive ink onto plastic film. The inks dried to hard, but flexible, electrical conductors. This process eliminated significant waste.

The ink had a small amount of solvent that evaporated into the air. But it was well below the permitted 5%The highly automated plant had a screen printer that automatically picked up sheets of plastic, fed them through the printing mechanism, and off loaded each one onto an oven conveyor.

The oven fire box was on the roof and fed heated air through duct work to the heating tunnel inside the plant. An employee in the parking lot heard a slight thud and saw a bright metal dome shaped object falling from the sky.What was this flying saucer over the factory and where did it come from?

Here's the rest of the story.

The oven heater on the roof had malfunctioned. The gas had come on, but the igniter did not immediately fire up.

When the igniter finally fired, the small explosion blew the rain shield off the roof vent pipe that looked like a flying saucer to the surprised observer in the parking lot.;
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