By way of our resident coffee gadget guru John Edgar Park comes word of this… er… homebrewed temp-regulated, lever espresso machine, called the Robo-Pavoni.
Robo-Pavoni ; learning to make an espresso machine from scratch
2 thoughts on “Scratch-built espresso machine”
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Is there a safety valve in that anywhere? The article didn’t mention one. If it’s running at 9 bar (~130+ psi), it’d be a good idea!