Hello Don Many thanks for your detailed explanation - as requested. The ETD I used for bringing the pianos up to pitch is not the one I use for tuning CF3 or Model D. Then I use an arm/leg job called TLA tuning set CTS-5 made by Marc Vogel, Germany. I only use this set for one 8ve., listening at the 1/3, 1/4,1/5, correcting by ear any discrepancy from a smoothe decrease in the major 1/3 beat rates as I go down the keyboard. This so called "smoothe" decrease is, of course, equally tempered. Then I turn the machine off and the rest is done by ear. Going down first and then up to the top. At the bottom I use 1/10 extensively - I can stretch a 1/10 quite comfortably. At the top end I make much use of 1/15, but I have to admit my span is not that large. I use just one wedge - quite enough - and tune the whole tri-cord as I go. I've developed my "Quadrant System" along the same lines and test my results by it as I go. You soon train the ear to detect variations in beat rate from the norm. So I do NOT rely on that machine, but on my ears. It is the end result which matters. Although I do now, for purposes of speed, use the machine for just one 8ve., I rely entirely on a developed "sixth sense" to tell me if anything goes awry. So in this respect my tuning is not scientific but artistic. After all, the pianist who uses the piano does it for artistic reasons. There I now rest my case. I use a large canvas photographers bag as a case and it weighs a ton... Regards Michael G (UK)
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