Some of you may have been following my very slow progress toward regaining my RPT status. For those who don’t know, the Piano Technicians Guild (PTG) provides structure to the industry of piano maintenance, producing annual national conventions and numerous regional ones that focus on education, training and professional behavior. In an effort to standardize a way of measuring skills, the guild offers RPT status, which stands for Registered Piano Technician. To achieve RPT status, one must pass a series of tests, including a written test, a bench test consisting of 3 parts (grands, uprights and repairs) and a multi part, 4 hour tuning test. I originally achieved RPT status in 1980 but, in a stroke of idiocy, let my membership to the Guild lapse about 10 years ago. Being an Associate has bugged me and I’ve had it in my mind to regain the RPT level if for no

A high end piano, while weighing hundreds of pounds, is actually quite a delicate item. The 2 biggest dangers are swings in humidity and improper servicing. Humidity: While high humidity (greater than 70%) can cause inconveniences, such as sticking keys, it rarely causes true damange. Besides, in this day and age most homes that have high end pianos have central air conditioning that keeps the humidity in the summer months at a relatively constant level. Low humidity (less than 40%) can truly damage your piano. This damage can include soundboard cracks, loose tuning pins, action problems and more. While maintaining a constant humidity level, say 45%, is desirable, it is difficult to achieve. The most critical step is to put an absolute limit to how low the humidity in the room can go. This usually means carefully tracking humidity with a simple hygrometer, available at most hardware stores, and adding

There are 2 books I’ve been reading lately, one new and one not so new. The Voice of the Piano by Andre Oorebeek is a welcome addition to the sparse list of books on piano technology. This book is a very clear and thorough examination of the process of high end piano voicing, which concentrates (but is not limited to) manipulating the shape and density of the felt of piano hammers. Oorebeek brings some light to an area that has traditionally been considered a black art, mainly because it is so hard to talk about. Even with his clear description of techniques, it really doesn’t mean anything if you can’t hear the progress and results. However it holds a lot for experienced technicians as well as piano lovers who are interested in their instruments. Next, to be clear, I really do read this kind of stuff. Virgil Smith has long

A single piano key sets into motion a set of 3 strings, all set in motion by the same hammer and all tuned, ideally, to the exact same pitch. This collection of 3 strings is called a unison. One usually sets a temperment by muting off 2 of the 3 strings in each unison over the temperment octave. This allows you to really focus on specific individual partials between the note you are tuning and the note you are tuning from. This is usually done by threading a thick felt strip between each of the unisons, muting the outside string of each. You then tune the center string as the reference. Setting a temperment is a really process of adjusting 12 variables, each of the strings in the octave. making those fine adjustments is considered much easier to do with one string at a time, and then, when you are

My Yamaha CFIIIS came back from PianoWorks in Atlanta and was installed in Charleston. It was very nicely strung with new pinblock and treble bridge cap. Flawless delivery to Charleston sounding very good on arrival. Good is relative, of course. The parts PianoWorks did were very very good. The sound of the hammers and their presence in a midsize room was harsh. They will only begin to sound acceptable with a couple of hours of serious voicing, and that can’t happen until the piano is tuned and very stable. To me, that’s at least 10 tunings. I just have to get started. I haven’t tuned a piano in a year and before that probably 2, so I’m rusty. The skills of tuning stay with you, like riding a bike. The facility and confidence, however, have to be painstakingly, patiently rebuilt.

David Andersen is a very interesting high end piano technician in Los Angeles. I attended one of his tuning seminars at the PTG convention in Rochester. Very very interesting, holistic approach to life as well as tuning. Here is his blog, one of the few I have found by high end piano technicians.