I put a lot of effort into this post. That’s right. I waited and waited for dust to build up on my piano. It was hard, but I resisted the urge to dust it many times. What can I say? I’m a giver. Like many pianos, mine has a glossy finish. As much as I love it and plan on having it until my dying day, every little bit of dust and fingerprints shows up on it. (Do you know how many places a 4-year-old touches?) Product residue can make the piano’s finish look filmy. Even water marks can show up from dusting it with a damp rag. For a long time…