by schlem, published
This thing was made with Tinkercad.
You can order one here: http://www.shapeways.com/shops/bitforge
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It is very important to use fresh, cold water, and freshly ground espresso roast coffee. A lighter roast will not do. Kona coffee is not even acceptable for drip. Heat your portafilter and shot glasses prior to pulling the shots and tamp the coffee into a "puck" with 30 pounds of pressure.