I put the attachements in the dishwasher and they now have a greyish powder which I cannot remove by washing. How do I remove this and why did it happen?
Dishwasher powders/ detergents are high in alkaline with high PH values
that reacts with some metals or metal based products so any shiny aluminium finishes will be grey
it is a chemical reaction and will not be removable by washing or polishing
It will not look good but will cause not other problems
This answer did not help.
I soaked the pieces in vinegar for. Day and then in baking soda.
The grey coating keeps wiping off
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