Stephan, I really appreciate you thoughtful postings. They touch on important stuff. Bye the way, I've given a number of presentations to Steinway, of production techniques based on the new metrology. The ones who actually make the pianos recognize the benefits and are excited by the prospects of using the techniques, but the engineering staff doesn't get it. My system is for piano makers. It's a little frustrating but I'm patient. I'll have more time too converse after Albuquerque. Bye, David "You can resist the invasion of armies but not an idea whose time has come" Victor Hugo
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