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Re: Stubborn key cups

Author: mmichel
Date: 2021-02-10 04:19

Older Selmers (i.e., Centered Tone and earlier) have solid nickel-silver keys, which is great because you don't need to worry about breaking through the plating when polishing them mechanically (i.e., with a buffing wheel).

I'm not sure when they stopped having solid nickel-silver, but I'm pretty confident it was before the Series 10s. Unless you're certain the keys are solid nickel-silver, you should probably avoid using a mechanical polishing method (especially using a power tool) because you might break through the plating, exposing the underlying brass.

If the keys are actually nickel-plated, then the Brasso should work. If they are silver-plated (as some old Selmers were) then using Brasso is a really bad idea. Instead, you should use a proper silver polish (e.g., like Weiman's).

If you do nevertheless choose to use a buffing wheel, you should probably use the finest polishing compound available (which is usually colored red).

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