In a message dated 12/6/2003 9:31:03 AM Eastern Standard Time, [EMAIL PROTECTED] writes:
> Titanium valves have the advantage not being very sensitive to change of > temperatures. They are very light, near to aluminium, don't oxide , do > (nearly) never stick. And if the stick, you just turn them on the wing > in the back, forth & back, and the work fine as usual. > > Just from my own experience as player (since 1957) and > advisor for horn > production (since 1978) & producer of horns (since 1996). > > Hans Pizka I'm impressed with your experience. The point I tried to make is that technology is moving far more quickly than many realize. You pointed out better than I did exactly how much modern technology is being directed towards the horns you manufacture. you're obviously investing substantial money as your contribution to the overall technology, and to be sure you stay aware of any developments you might use to your advantage to make your horns even better. I do a lot of the same things in my work. I actually make the drawings for the CAD DXF files, and I work with several shops in the LA area to produce the finished product. What I'm developing now is an unconventional mirror for projection optics. Single formula lenses of elliptical geometry just don't work at small sizes. It is proving impossible to make the light plasma ball much smaller than two millimeters in diameter. To concentrate that light onto a six millimeter diagonal LCD, with any efficiency, is impossible. I have found that if I make a reflector composed of about a thousand individual lenses, each single lens can be designed to project a focused image of the arc onto the target. Since the reflector is only 65 millimeters in diameter, each individual reflector is quite small. A modern five axis CNC is capable of machining the mirrored surface. Once I have the surface done on a stainless steel form, and polished, it is used as a mandrel for electro-forming the finished reflector. Calculating the complex reflector surface and then machining it is only recently possible. Your description of your horn experiments gives me a good insight into your areas of interest. If I come across any new technology, here in the LA area, that might be of interest to you, I will send it on.
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