I have a MIDI controller keyboard that I have cleaned in the past with disinfectant alcohol wipes, which I know is a bad idea because it degrades the rubber over time.

Well, the rubber on the pitch bend and modulation wheels has indeed degraded, and the surfaces texture is awful, uneven and sticky now. My fault... I know.

So does anyone know of any way to fix, or even improve, this kind of nasty rubber surface degradation once it occurs? Sanding? Applying oils? Is there any way I can even slightly restore these controls back to their original soft-touch rubbery glory?

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WD40 evaporates?

A lot of compressed canned things are something suspended in a solvent, and when let out of the container the solvent evaporates leaving behind whatever stuff was dissolved in it. I can't speak if it's the solvent or something in the WD-40 that has the effect the previous poster is talking about.

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