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Trying to clean an old gaggia

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  • #16
    So the boiler is food safe in this condition, if fed only filtered water? Otherwise will use the machine for parts.

    I will try with some emery paper, assume medium would be about 600, coarse 400?

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    • #17
      With emery that fine you would have to use a LOT of elbow grease to remove enough metal to get past the pitting.
      For this job P80 will be coarse enough for fairly fast sanding to get past the pitting, and P180 will give a smooth enough surface for the gasket to seal against.

      I have never used filtered water in any of my machines, but I descale regularly. and will strip, clean and rebuild when necessary.

      As for "food safe" - it certainly doesn't bother me, but you will have to make up your own mind about that.

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