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I’ve bathed stuff for days in cold solution when restoring machines without a problem, and left it in a hot machine for a full working day when doing an in-situ descale. I think the acidity weakens a lot when you start dissolving kilos of calcium into it.
Good excuse to show off my shiny pipes.
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Stevethecoffee
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I think the acidity weakens a lot when you start dissolving kilos of calcium into it.
I've definitely observed this when descaling stuff. It had always surprised me how little limescale it takes to neutralise a quite strong acid solution.
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Where do you learn about restoring a coffee machine? What sort of machine do you start from? It's not something I have plans on doing just general interest
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Nice work! What's the machine?
I restored a little series 1 La Pavoni Europiccola I found cheap over here. It was therapeutic. I've just got a Faema Faemina to do next...I'd love to do a big, 2 group like a Faema President or Urania if I ever get a big enough kitchen to keep one in....I like the lever machines.
Stonehedge
rj
Jung
Sod it. When I'm back in London I'm going to immerse some raw copper in 10% citric acid and see what happens.