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Steel string making

 
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citera
Baby Guzheng


Joined: 13 Jun 2015
Posts: 41
Location: Hungary

PostPosted: Tue Jun 16, 2015 2:18 pm    Post subject: Steel string making Reply with quote

I am a Hungarian zither maker. I have alredy made more than 100 Hungarian zithers. Hungarian zither is always steel stringed, so I had to learn how I can make copper spinned strings. I can compute their measurement. The thickness of the core, and thickness of the copper spinnings, because spinning can be gang. I worked out the formulas and algorithm of the computing of measurement. I can compute the stress, pulling force, frequency and length. One of these phisycal variables can be the unknown of th equaton which I want to compute. I will share you the cnowlegde of proportioning and the way of carry out the making.
I have written an assay about this topic in Hungarian. I need more time for translating to English, so you must wait couple mounths, but gradually I will teach you to this. I just took my intermediate level language exam, and it not surely successfull. So I need time to search the exact and correct profession terms in English. I think I am able to cope with this problem.

I apologize for delaying.

I need to know how I can put in here photos? I should give drawing of the devices and tools, so i really need post photos to share the knowledge, but I don't know the way of it.
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yukina
Site Admin


Joined: 05 Feb 2015
Posts: 26

PostPosted: Wed Jun 17, 2015 9:45 am    Post subject: Reply with quote

Hi citera:

Welcome to the forum.
That's so interesting! Can you upload the pictures to some photo sites and copy the links here? This site does not support photos at this moment.

Thanks,

Yukina
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citera
Baby Guzheng


Joined: 13 Jun 2015
Posts: 41
Location: Hungary

PostPosted: Wed Jun 17, 2015 12:12 pm    Post subject: Reply with quote

The most basic formula:

f= (1/(2*l))*sqrt(F/(A*Ro))
f: frequency[Hz]
l: length[m]
F:pulling force [N]
Ro: density of the string's material[kg/m3] if it is steel then the value is 7850
A: Area of the string's cross section
sqrt: this is an operation: square root
A=d2*pi/4
d2 is meaning square operation with d, which is the diameter of the string
pi: 3,14
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Last edited by citera on Wed Jun 17, 2015 12:35 pm; edited 1 time in total
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citera
Baby Guzheng


Joined: 13 Jun 2015
Posts: 41
Location: Hungary

PostPosted: Wed Jun 17, 2015 12:34 pm    Post subject: Reply with quote

But you have alredy post photos in your replyes. How you did it?
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citera
Baby Guzheng


Joined: 13 Jun 2015
Posts: 41
Location: Hungary

PostPosted: Wed Jun 17, 2015 12:38 pm    Post subject: Reply with quote

[img]http://www.861234567.com/ifile.php?xname=N6G0I31&fname=1349617331.jpg[/img]

I try posting a photo
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citera
Baby Guzheng


Joined: 13 Jun 2015
Posts: 41
Location: Hungary

PostPosted: Wed Jun 17, 2015 12:45 pm    Post subject: Reply with quote

not successful, i see only letters, not the picture
such as this topic is full of photos about Mitsuja Koto factory, how did you it?
http://guzhengforum.com/viewtopic.php?t=1292
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