My trusty old Quick Mill thermoblock coffee machine. Labelled 'Poccino' who sold them here, was 3rd Hand when I was given it, needed a bit of work, but was then ok. Mechanical switching between espresso portafilter and steam wand gave up after a time, I found an update online to convert this to electrical switching using the existing switches, a solenoid-type valve specifically for this use and one or two plumbing items. I replaced the pump as well. It is still going strong after more than 30 years and a friend has it.