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Additional projects / Tools & mechanisms
Activated-carbon air filter
A fan-driven filter built around a perforated metal tin, probably during middle or high school. The exact project year is uncertain.
Open the numbered review →Filter assembly
Photos 275–276

Photo 275 ·
An early air-filter experimentA fan-powered filter I made, probably during middle or high school. I do not recall the exact year. Air enters through holes punched in a metal tin, passes through activated carbon inside, and is drawn through by the fan.

Photo 276 ·
Another view of the filterA second angle of the activated-carbon filter, showing the fan and metal-tin housing used to draw air through the carbon.