There are a lot of reasons to love the Rancilio. It’s got a powerful pump to push water through densely packed, finely ground coffee. It’s made of chromed steel, and the boiler and portafilter are made of heavy marine-grade brass. And, for espresso hackers, the Silvia stands above other machines because it’s easy to modify. In many ways, it’s like a pre-1960 automobile. The electronics are simple, with no microchips, digital readouts, or transistors. The steel cover can be removed with an ordinary Phillips-head screwdriver. And once you take the cover off, you see that there’s plenty of room in there. It’s easy to access all the inner workings of the machine.