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/diy/ - Do It Yourself

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>> No.1405346 [View]
File: 38 KB, 1400x788, glow headphones.jpg [View same] [iqdb] [saucenao] [google]
1405346

>>1405301
It looks like they do indeed have copper in them, pic related, but I went to the site of the guys who make their fibre optics (the fibres are Corning's "fibrance") but there was nothing about having copper in the middle there at all.

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