Q: We acquired a Knabe baby grand piano from a neighbor whose grandfather purchased it in the 1920s. The wood is really dull, and we’d like to be able to polish or refinish it without damaging the ...

Would it surprise you if I told you they use two products that you can buy and do what they do, for a whole lot less? Let me tell you a little story. Many years ago at a hardware show in Denver, Colo.

David Sanderson is the owner of Sanderson Piano Services in Littleton. He is the son of Albert Sanderson, former director of the Harvard University Electronics Design Center and inventor of the first ...