Love it. There’s a surprising amount of hackability in espresso machines — reminds me a lot of bicycles as an approachably fun tinkering project.
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Start with tuning brakes, to changing chains, and tuning derailleurs, changing cables, taking bits off for cleaning.
It will feel cumbersome, and a few times you will get yourself into a mess and end up taking a more-broken bike to the shop. But you'll get there eventually.