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Re: GH1 (GH1B?) scale design
Elecmuso #2640841 05/07/17 12:04 AM
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Al;so I do not recommend using stainless wire if the agraffes have a hard steel rod insert that the strings bear on. Hard termination points will destroy stainless and other softer wires. (Hard terminations also destroy the tone)!


In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: Ed@LightHammerpiano.com
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Re: GH1 (GH1B?) scale design
Elecmuso #2640843 05/07/17 12:15 AM
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A US patent was granted a few years ago for piano strings made from amorphous metal. Amorphous metals can be extremely strong. But most are also extremely brittle. The patent claims go on at some length trying to claim the wave form spectrum produced by the wire. Interesting but hard to fathom if anyone actually succeeded in making any strings that way. Certainly nothing in the press I could find about it.


In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: Ed@LightHammerpiano.com
Re: GH1 (GH1B?) scale design
Elecmuso #2640909 05/07/17 08:06 AM
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Ed,

What is amorphous metal? Any ideas?

Pwg


Peter W. Grey, RPT
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https://www.youtube.com/watch?v=PK0T7_I_nV8
Re: GH1 (GH1B?) scale design
Elecmuso #2640917 05/07/17 08:48 AM
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It’s great to see that both Ed and Peter have chimed in on the Pure Sound wire, since both of them are capable rebuilders and have extensive knowledge of it. It is useful for them to share their experiences. As an aside, just this week I got Hans Velo’s string scaling program. You can scale with Pure Sound, Pure Sound Strong, Paulello, or Roslau wires. I haven’t really gotten under the hood yet, but it should be interesting and fun.
Great articles by Del, indeed. I recommend the reading of them by anyone interested in piano design. Del is one of the smartest and most accomplished people in the world, and he has had his impact on so many of us. I am still learning from Del.
Historically, most “new” piano designs have been little more than blatant (and often misinterpreted and cheapened) copies of older designs. That continues to this day, all one has to do is look at all the copycat Chinese pianos. With few exceptions, manufacturers have shown little to no interest in reinventing their designs.
Thus, most of the curiosity and inventiveness has come from the rebuilding community, as evidenced by the contributions of a small group of people, some of whom we see on these forums. For myself, I don’t think the best possible small grand has been built yet. That’s the cool thing: There are still people out there asking these questions. What is possible? What are the limits? How good can it be?



fine grand piano custom rebuilding, piano technician and tuner
Re: GH1 (GH1B?) scale design
P W Grey #2640951 05/07/17 11:12 AM
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Peter, I will try to answer.

Amorphous solids are solids that don't have an ordered crystalline structure to the atomic lattice. Glass is an amorphous solid.

Liquids are an amorphous state of matter. So an amorphous solid is sort of like a "frozen" fluid. (Ice is not amorphous, it is a crystalline solid. So I hope my analogy does not confuse.)

An amorphous solid state of matter is not crystalline is the simplest answer.

You can Google it.


In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: Ed@LightHammerpiano.com
Re: GH1 (GH1B?) scale design
Elecmuso #2640957 05/07/17 11:19 AM
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To add to Will's last comments. The option in scale design that the different wire types offer is huge. The various combinations possible are many. So much experimenting must be done to work out the best balance among the variable design parameters.

Wound string technology is an area where I would like to see new developments. Making lightly loaded strings to use as high as note 30 in the compass that have a degree of perfect uniformity so as to insure wound tri-chord unisons can be tuned pure is one area of need. They also must have similar brightness to high BP plain wire.


In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: Ed@LightHammerpiano.com
Re: GH1 (GH1B?) scale design
Ed McMorrow, RPT #2641023 05/07/17 02:38 PM
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To those who might be interested, google liquid metal. Some fascinating properties, indeed.


fine grand piano custom rebuilding, piano technician and tuner
Re: GH1 (GH1B?) scale design
Ed McMorrow, RPT #2641176 05/08/17 02:31 AM
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Originally Posted by Ed McMorrow, RPT
Peter, I will try to answer.

Amorphous solids are solids that don't have an ordered crystalline structure to the atomic lattice. Glass is an amorphous solid.

Liquids are an amorphous state of matter. So an amorphous solid is sort of like a "frozen" fluid. (Ice is not amorphous, it is a crystalline solid. So I hope my analogy does not confuse.)

An amorphous solid state of matter is not crystalline is the simplest answer.




You can Google it.



Glass as an amorphous form of matter is actually flowing due to the influence of gravity. It is a phenomenon observable in older buildings (hundreds of years old) where the glass is actually thicker at the bottom of the glazing from it's slow flow toward the bottom of the window.

I believe tar (as used in making asphalt) is also considered amorphous. Not that it is important to the discussion, but it is interesting.



Dale Fox
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Remanufacturing/Rebuilding
Re: GH1 (GH1B?) scale design
Dale Fox #2641179 05/08/17 02:43 AM
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Re: GH1 (GH1B?) scale design
Elecmuso #2641182 05/08/17 02:57 AM
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I have never yet seen obsidian as a puddle even though it may be millions of years old!


Chris Leslie
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Re: GH1 (GH1B?) scale design
BDB #2641191 05/08/17 03:29 AM
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Originally Posted by BDB


Sure it does!!! It is a highly viscous amorphous mixture, something like your local politician!!!1


We meet upon the level, and..you don't fear someone whose story you know!
Re: GH1 (GH1B?) scale design
tonyster220763 #2641193 05/08/17 03:36 AM
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I know a number of local politicians, and more importantly, a lot of them know me. The perception that they might be viscous amorphous mixtures usually comes from people who do not know them, because they are a viscous amorphous mixture. As are we all, of course!


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Re: GH1 (GH1B?) scale design
BDB #2641201 05/08/17 03:57 AM
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Originally Posted by BDB
I know a number of local politicians, and more importantly, a lot of them know me. The perception that they might be viscous amorphous mixtures usually comes from people who do not know them, because they are a viscous amorphous mixture. As are we all, of course!


So I guess your politicians practice what they preach? That's good to hear.Glass is also transparent, as I take it are your local politicians?


We meet upon the level, and..you don't fear someone whose story you know!
Re: GH1 (GH1B?) scale design
Elecmuso #2641334 05/08/17 11:58 AM
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I have a friend who is the retired former chief material scientist for the Boeing Company. It drives him nuts to hear people take the fact that glass is an amorphous solid and that all liquids are amorphous solids, and from this deduce that solid glass must "flow". This "fact" is even found in some books that might otherwise pass as textbooks.


In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: Ed@LightHammerpiano.com
Re: GH1 (GH1B?) scale design
Elecmuso #2641485 05/08/17 06:51 PM
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It looks like some pretty interesting stuff!

Pwg


Peter W. Grey, RPT
New Hampshire Seacoast
www.seacoastpianodoctor.com
pianodoctor57@gmail.com
https://www.youtube.com/watch?v=PK0T7_I_nV8
Re: GH1 (GH1B?) scale design
BDB #2641511 05/08/17 08:31 PM
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Originally Posted by BDB


I stand corrected and apparently caught by an old tale.


Dale Fox
Registered Piano Technician
Remanufacturing/Rebuilding
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