List of Monumental sculpture projects 2015

  • 1 http://swannbb.blogspot.fr/2015/02/sunday-robot-play.html
  • 2 http://shuengitswannjie.blogspot.fr/2015/02/interactive-reading-room-tea-house-2015.html
  • 3 http://swannbb.blogspot.fr/2014/06/neo-ming-bed-luxembourg.html
  • 4 http://swannbb.blogspot.fr/2013/02/yuzi-paradise-tell-moon.html
  • 5 http://swannbb.blogspot.com/2011/09/12th-changchun-international-sculpture.html
  • 6 http://www.saatchionline.com/Shuen-git

Tuesday, 23 August 2016

Anti-slip guqin pegs data - ongoing update

22Aug2016:: data from around the world, diff climate, diff temp, diff humidity all mixed

Test: Is "slipping" a common problem? and if using old pegs, how much slipping happens in a 2 to 3 hrs or more period?  
What might be the condition that makes "slipping" happen?

I noticed under very hot stage lights, the silk strings are often affected by the heat, and i see master players adjust their strings every now and then before playing a piece.

If under normal conditions, there is no slipping, but under performance conditions, due to heat from the lights, this happens, would "anti-slip" pegs be of great help?

Here, under high heat, the strings themselves stretches more, so, the problem of slipping notes is not in the pegs but more in the adjustment of strings

Therefore, the anti slip pegs are useful for ... regular conditions.  Its always helpful to have a locking device to minimise slipping of tuning.  Always gd to have more control.

===
More discoveries thanks to input of all feedbacks
Conclusion 24aug2016:
I have thought about this question for the last few days. In fact, the traditional pegs work fine. Its just that to fine tune, if you use a screw mechanism its v smooth turning. And thats about it. Still smooth turning is better than non-smooth turning. All pegs should be anti-slip either by friction or by mechanical device (screw). Thanks for your feedback.

------------------------------------------------------------------------------------------------------
1  CE(uk)/ 22aug2016
old traditional qin pegs, str#1, no change after 2.75hr  //  

------------------------------------------------------------------------------------------------------
2 JYST (Canada)/ 22aug 2016
old system once tuned, stays at least one wk no need to retune. // maybe due to qin and not only the pegs


Of course not, too poor

Also, as someone who uses original parts from shop, and able to fix own stringing, why would I?
But I can tell you my pegs don't slip
Provided they are not moved and laid flat on a table, I find that I can leave a qin alone for a week and it's the same after

Not every qin can do this, of course

But mine is OK indefinitely, I haven't tried leaving one on a table long enough to be untouched
------------------------------------------------------------------------------------------------------
3  YH (NY) /22aug2016  Adjustment every day. Dryness due to heating in winter also affects. Only very occasionally, I don't need any adjustment. It's because of silk strings and not because of pegs, I suppose.
------------------------------------------------------------------------------------------------------
4  JB (Portland) / 23aug2016

I always adjust the tuning before I play anything in a session and will check it into a session after a bit. If the weather is not stable strings may stretch or tighten. I'm not sure what anti-slip means. anti-slip technology so called means the peg pool is sanded roughly and should not be smooth. The top of the pegs are concave (this is traditional and is mentioned in the yuguzhai). one can always roughly sand the top of the peg as well. Simpler first things to try are to apply something abrasive to the peg pool like chalk dust or the like. Or candle wax if the peg is too tight. New strings always stretch and it isn't unusual to have to put silk strings on/off in toto 3 times if they are new. n-m don't usually need a restringing but they still stretch when new. Sometimes slippage may be due to the rongkou themselves and the usual fault is that the last twist over the top either wasn't done or needs to be done one more time.


Why or why not? Do you think w screws is better?


Irrelevant for n-m strings. Useful for silk strings since you need to detune 6-7 or 5-7 every time you stop playing and restringing gets old fast and the strings being organic tend to move more. Also that was a joke. But the cost needs to come down.


Its just screws you can make your own w any wood outer casing;
I see a lot of v pretty purple hardwood

Gold silk thread hard wood etc also drift wood w many holes; new transparent wood; so beautiful

And exactly how many people would do that? Less than the number of silk string users. Also I might point out that the variety of different kinds of machines used with guitars is astonishing of course. In essence the guqin has TWO kinds at this point. And the guitar has about a million. If you get Qinfu and look at the section of pictures of Qin from the 70s - there are a number of them with guitar tuners actually. I've thought about this but the real problem I think that is much more important is restringing one string at a time as opposed to 3 or 4. Keep in mind that silk strings are probably at about 100 to 1 or greater in terms of per qin user and string 7 is usually the string that breaks anyway. Still it is very handy to be able to change 1 string (say string 1 ...). Also I'm not opposed to mechanical tuners. Cheap guitar tuners are a pain in the backside (guess what - they slip)


I made an individual str tuner but its a bit heavy so i just keep it as a symbol of what to do;

this is for getting rid of hassle of having to remove all the strings in order to re-string one string
------------------------------------------------------------------------------------------------------
5  HY (hk) / 22aug2016


The simple is the best
For new silk string, re-stringing twice it becomes stable. It usually lasts for over a month.
Slipping of silk is due to incorrect fixing the silk on the leg
Traditional one is good enough


Tiny adjustment is required due to variation of humidity

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9
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Anti-slip guqin pegs data - ongoing update

22Aug2016:: data from around the world, diff climate, diff temp, diff humidity all mixed

Test: Is "slipping" a common problem? and if using old pegs, how much slipping happens in a 2 to 3 hrs or more period?  
What might be the condition that makes "slipping" happen?

I noticed under very hot stage lights, the silk strings are often affected by the heat, and i see master players adjust their strings every now and then before playing a piece.

If under normal conditions, there is no slipping, but under performance conditions, due to heat from the lights, this happens, would "anti-slip" pegs be of great help?

Here, under high heat, the strings themselves stretches more, so, the problem of slipping notes is not in the pegs but more in the adjustment of strings

Therefore, the anti slip pegs are useful for ... regular conditions.  Its always helpful to have a locking device to minimise slipping of tuning.  Always gd to have more control.

===
More discoveries thanks to input of all feedbacks
Conclusion 24aug2016:
I have thought about this question for the last few days. In fact, the traditional pegs work fine. Its just that to fine tune, if you use a screw mechanism its v smooth turning. And thats about it. Still smooth turning is better than non-smooth turning. All pegs should be anti-slip either by friction or by mechanical device (screw). Thanks for your feedback.

------------------------------------------------------------------------------------------------------
1  CE(uk)/ 22aug2016
old traditional qin pegs, str#1, no change after 2.75hr  //  

------------------------------------------------------------------------------------------------------
2 JYST (Canada)/ 22aug 2016
old system once tuned, stays at least one wk no need to retune. // maybe due to qin and not only the pegs


Of course not, too poor

Also, as someone who uses original parts from shop, and able to fix own stringing, why would I?
But I can tell you my pegs don't slip
Provided they are not moved and laid flat on a table, I find that I can leave a qin alone for a week and it's the same after

Not every qin can do this, of course

But mine is OK indefinitely, I haven't tried leaving one on a table long enough to be untouched
------------------------------------------------------------------------------------------------------
3  YH (NY) /22aug2016  Adjustment every day. Dryness due to heating in winter also affects. Only very occasionally, I don't need any adjustment. It's because of silk strings and not because of pegs, I suppose.
------------------------------------------------------------------------------------------------------
4  JB (Portland) / 23aug2016

I always adjust the tuning before I play anything in a session and will check it into a session after a bit. If the weather is not stable strings may stretch or tighten. I'm not sure what anti-slip means. anti-slip technology so called means the peg pool is sanded roughly and should not be smooth. The top of the pegs are concave (this is traditional and is mentioned in the yuguzhai). one can always roughly sand the top of the peg as well. Simpler first things to try are to apply something abrasive to the peg pool like chalk dust or the like. Or candle wax if the peg is too tight. New strings always stretch and it isn't unusual to have to put silk strings on/off in toto 3 times if they are new. n-m don't usually need a restringing but they still stretch when new. Sometimes slippage may be due to the rongkou themselves and the usual fault is that the last twist over the top either wasn't done or needs to be done one more time.


Why or why not? Do you think w screws is better?


Irrelevant for n-m strings. Useful for silk strings since you need to detune 6-7 or 5-7 every time you stop playing and restringing gets old fast and the strings being organic tend to move more. Also that was a joke. But the cost needs to come down.

Its just screws you can make your own w any wood outer casing;
I see a lot of v pretty purple hardwood

Gold silk thread hard wood etc also drift wood w many holes; new transparent wood; so beautiful

And exactly how many people would do that? Less than the number of silk string users. Also I might point out that the variety of different kinds of machines used with guitars is astonishing of course. In essence the guqin has TWO kinds at this point. And the guitar has about a million. If you get Qinfu and look at the section of pictures of Qin from the 70s - there are a number of them with guitar tuners actually. I've thought about this but the real problem I think that is much more important is restringing one string at a time as opposed to 3 or 4. Keep in mind that silk strings are probably at about 100 to 1 or greater in terms of per qin user and string 7 is usually the string that breaks anyway. Still it is very handy to be able to change 1 string (say string 1 ...). Also I'm not opposed to mechanical tuners. Cheap guitar tuners are a pain in the backside (guess what - they slip)

I made an individual str tuner but its a bit heavy so i just keep it as a symbol of what to do;

this is for getting rid of hassle of having to remove all the strings in order to re-string one string
------------------------------------------------------------------------------------------------------
5  HY (hk) / 22aug2016


The simple is the best
For new silk string, re-stringing twice it becomes stable. It usually lasts for over a month.
Slipping of silk is due to incorrect fixing the silk on the leg
Traditional one is good enough


Tiny adjustment is required due to variation of humidity

------------------------------------------------------------------------------------------------------
6
------------------------------------------------------------------------------------------------------
7
------------------------------------------------------------------------------------------------------
8
------------------------------------------------------------------------------------------------------
9
------------------------------------------------------------------------------------------------------
10
------------------------------------------------------------------------------------------------------
11
------------------------------------------------------------------------------------------------------
12
------------------------------------------------------------------------------------------------------
13
------------------------------------------------------------------------------------------------------
14
------------------------------------------------------------------------------------------------------
15
------------------------------------------------------------------------------------------------------
16
------------------------------------------------------------------------------------------------------
17
------------------------------------------------------------------------------------------------------
18
------------------------------------------------------------------------------------------------------
19
------------------------------------------------------------------------------------------------------
20
------------------------------------------------------------------------------------------------------

Anti-slip guqin pegs data - ongoing update

22Aug2016:: data from around the world, diff climate, diff temp, diff humidity all mixed

Test: Is "slipping" a common problem? and if using old pegs, how much slipping happens in a 2 to 3 hrs or more period?  
What might be the condition that makes "slipping" happen?

I noticed under very hot stage lights, the silk strings are often affected by the heat, and i see master players adjust their strings every now and then before playing a piece.

If under normal conditions, there is no slipping, but under performance conditions, due to heat from the lights, this happens, would "anti-slip" pegs be of great help?

Here, under high heat, the strings themselves stretches more, so, the problem of slipping notes is not in the pegs but more in the adjustment of strings

Therefore, the anti slip pegs are useful for ... regular conditions.  Its always helpful to have a locking device to minimise slipping of tuning.  Always gd to have more control.

===
More discoveries thanks to input of all feedbacks
Conclusion 24aug2016:
I have thought about this question for the last few days. In fact, the traditional pegs work fine. Its just that to fine tune, if you use a screw mechanism its v smooth turning. And thats about it. Still smooth turning is better than non-smooth turning. All pegs should be anti-slip either by friction or by mechanical device (screw). Thanks for your feedback.

------------------------------------------------------------------------------------------------------
1  CE(uk)/ 22aug2016
old traditional qin pegs, str#1, no change after 2.75hr  //  

------------------------------------------------------------------------------------------------------
2 JYST (Canada)/ 22aug 2016
old system once tuned, stays at least one wk no need to retune. // maybe due to qin and not only the pegs


Of course not, too poor

Also, as someone who uses original parts from shop, and able to fix own stringing, why would I?
But I can tell you my pegs don't slip
Provided they are not moved and laid flat on a table, I find that I can leave a qin alone for a week and it's the same after

Not every qin can do this, of course
But mine is OK indefinitely, I haven't tried leaving one on a table long enough to be untouched
------------------------------------------------------------------------------------------------------
3  YH (NY) /22aug2016  Adjustment every day. Dryness due to heating in winter also affects. Only very occasionally, I don't need any adjustment. It's because of silk strings and not because of pegs, I suppose.
------------------------------------------------------------------------------------------------------
4  JB (Portland) / 23aug2016

I always adjust the tuning before I play anything in a session and will check it into a session after a bit. If the weather is not stable strings may stretch or tighten. I'm not sure what anti-slip means. anti-slip technology so called means the peg pool is sanded roughly and should not be smooth. The top of the pegs are concave (this is traditional and is mentioned in the yuguzhai). one can always roughly sand the top of the peg as well. Simpler first things to try are to apply something abrasive to the peg pool like chalk dust or the like. Or candle wax if the peg is too tight. New strings always stretch and it isn't unusual to have to put silk strings on/off in toto 3 times if they are new. n-m don't usually need a restringing but they still stretch when new. Sometimes slippage may be due to the rongkou themselves and the usual fault is that the last twist over the top either wasn't done or needs to be done one more time.

Why or why not? Do you think w screws is better?


Irrelevant for n-m strings. Useful for silk strings since you need to detune 6-7 or 5-7 every time you stop playing and restringing gets old fast and the strings being organic tend to move more. Also that was a joke. But the cost needs to come down.
------------------------------------------------------------------------------------------------------
5  HY (hk) / 22aug2016


The simple is the best
For new silk string, re-stringing twice it becomes stable. It usually lasts for over a month.
Slipping of silk is due to incorrect fixing the silk on the leg
Traditional one is good enough


Tiny adjustment is required due to variation of humidity

------------------------------------------------------------------------------------------------------
6
------------------------------------------------------------------------------------------------------
7
------------------------------------------------------------------------------------------------------
8
------------------------------------------------------------------------------------------------------
9
------------------------------------------------------------------------------------------------------
10
------------------------------------------------------------------------------------------------------
11
------------------------------------------------------------------------------------------------------
12
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13
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14
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15
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16
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17
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18
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19
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20
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carbon fiber guqin pegs: classic transparent, and anti-slip transparent by Shuengit 22Aug2016































top :: Transparent pegs with anti-slip, installed on carbon fiber guqin.  22Aug2016 by Shuengit

bottom::  Classic pegs: Transparent pegs by Shuengit





On strings:

I was at a string-making workshop for composite material - the master string maker said, the diameter, the material and the way the thread is made (what type/kind of twisting, whether coated in an outer wrapping/ reinforced string etc all affects the way the string vibrated) whether a string is gd on any specific instrument has to do with whether the string is "in phase" with the instrument itself. That means, whether guqin, guitar, cello, the fundamental principle physical properties do not change. Trying to find the perfect string for any specific instrument (ie guqin - specific to the pt of str #1, #2, #3 etc) you have to fine tune each string. Of course, you could make a string to match your instrument - but depending on the volume of strings needed, sometimes a less wasteful (of time) way is to make a whole range of different types and have instruments come to find its gd match. You bring your instrument and test it, try on, where is the one with the magic "in phase" property? And then, of course, everyone has personal preferences etc etc. Off the shelf sets are very gd, I am sure, some players needs more than off-the-shelf ready to wear strings. Just like in fashion, there is a difference between "customised string-matching-to-instrument" (tailored fitting) and ready-to-wear (off the shelf) strings. All good!!

Saturday, 20 August 2016

carbon fiber guqin transparent anti-slip tuning pegs; and Xuanji Tuning pegs

Carbon Fiber Guqin tuning pegs - 

As my carbon fiber guqin is hollow, the tuning pegs must be designed specially.
Initially I used the traditional pegs - the transparent clean pegs as shown in the photo below.  It works just like traditional pegs no problem.
And then I see on the market is a new type of anti-slip tuning pegs - Xuanji pegs - that most qin players admire.  
So I think why not install anti slip pegs for my carbon fiber guqin?  My cf qin is of a hollow thin shell construction.  
The existing anti-slip pegs are designed for traditional massif wood qins.  To use these on a hollow qin, I will need to make some kind of adapters.
So instead of making adapters, I decided to just make my own pegs.
I have created a version of screw and nut for my transparent pegs.  

Now, I must test it over a period of time to see how durable it is. 
Stay tuned, will report back in a few months.


carbon fiber qin with my new anti-slip transparent pegs

carbon fiber guqin with my transparent traditional pegs

===


吴跃华, 璇玑琴轸发明人
 Mr.Wu Yue Hua; research paper on Xuanji pegs:

http://www.guqin.org/zhafuxi/wuyuehua.html

the Origin Evolution & Improvement of Guqin Tuning Pegs
古琴琴轸的起源、演变与改良 - See more at: 


http://www.guqin.org/zhafuxi/wuyuehua.html


Guqin Tuning Pegs































Keynote speaker:Wu Yuehua,the inventor of the XUANJI tuning pegs ,吴跃华, 璇玑琴轸发明人 Time: 5/31/2015,1:30pm
Venue:The Chapel, Fort Mason Center,2 Marina Boulevard,  San Francisco, CA94123
Cost: Free admission
- See more at: http://www.guqin.org/zhafuxi/wuyuehua.html#sthash.A5HqyfKE.dpuf




Saturday, 13 August 2016