Inside every espresso machine, water is pressurized to 9+ bars. Over time, microscopic bubbles form and implode (cavitation). Usually harmless. But if the pump’s vibration frequency perfectly matches the natural resonance of the plastic chassis… you get a standing wave. A tiny, invisible hammer striking the same molecule of plastic hundreds of thousands of times.
Medium/LinkedIn Post / Reddit (r/sysadmin or r/techsupportgore) The Setup anomalous coffee machine crack
It started like any other Tuesday. 9:47 AM. The team was filtering in, bleary-eyed, making the sacred pilgrimage to the communal coffee machine. But this time, something was wrong. Inside every espresso machine, water is pressurized to