> >Two thing to rule this out, one cost. Two anything with a screw thread >is going to move with vibration and become lose over time, where as the >paper only has to deal with compression over time and is cheep to put >right. > >The system we have may look Archaic but it is tried and tested and uses >the KISS principle. > >Barrie, Here here! The piano is the strangest combination of stone age technology and cutting edge physics that I've been associated with, even though I was never an associate, and have cut myself far more using stone age technology than I ever did with physics. In the piano, we are bending wires, carving with chisels, and shimming with paper while we split hairs (possibly hares in England) to the thousandth of an inch, but we can do it by the established methods at minimal cost in materials, time, and remedial education. Well, OK, I lied about the remedial education, but the rest of it is pretty straightforward. Fact is, anything can be complicated far beyond practicality, usually by committee, in the interest of simplicity. Given the choice of an archaic method of adjustment that is relatively stable, over an adjustment with a slick mechanism, that is more expensive to produce, and doesn't offer any real benefit in time savings, enhancement of function of the adjusted part, or long term stability, I would tend to go for the shiny gadget. Never mind that though, that's a character fault I'm trying to overcome. The smart move is to go for the simple, elegant, and dependable. Like Barrie said... KISS. Ron N
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