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Tractionist · 22nd Dec 2018, 6:14 pm

How bad is it? Photos? Is any of it black in colouration [that type of aluminium oxide is nearly as hard as diamond]? Most of it will brush off, and warm soapy water will remove a lot if not all of it .... then, you may wish to consider 'preventative measures' e.g. a light spray with a silicone-based foam polish [all finished with proper drying and bearing lubrication etc.].

22nd Dec 2018, 6:14 pm	#2
Tractionist Heptode Join Date: Apr 2016 Location: Cheltenham, Gloucestershire, UK. Posts: 875	Re: Variable capacitor oxidation How bad is it? Photos? Is any of it black in colouration [that type of aluminium oxide is nearly as hard as diamond]? Most of it will brush off, and warm soapy water will remove a lot if not all of it .... then, you may wish to consider 'preventative measures' e.g. a light spray with a silicone-based foam polish [all finished with proper drying and bearing lubrication etc.]. __________________ Red to red, black to black. Throw the switch and stand well back!