The Coffee Hourglass Experiment

The goal was simple - to construct a coffee brewing machine from two Ball jars. After seeing some beautiful siphon style brewers this past summer in San Francisco, and recently learning about the Chemex setup,I was inspired to try my hand at making one.

This is the first iteration.

A filter is placed in what will be the lower jar.

The middle section of the two-part Ball jar lids are drilled and screwed together; in this way, the two jars can be screwed together.

 

The apparatus hard at work, with a stopwatch to determine how long the process would take. It turns out, the stopwatch did not have enough digits. The setup above produced but a trickle of coffee.  While I realized air would have to travel from the empty jar to the one containing hot water, I thought the holes drilled would be sufficient. Such was not the case. 

  Still yearning for a cup of coffee, the picture above shows required steps for consumption.