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 ...

Q: There is a problem in the heavily trafficked, upstairs stairwell of our 1919 house. One of the floorboards (not original to the house) is splitting. A long, narrow portion is pulling away from the ...