Hi friends, and nice greetings from Germany.
I have a question: what would happen if I would cut off the built-in LED on an ESP8266-12E with a tongs ?
Would the board be damages on a long term perspective ?
Cutting could put stress on the board that could possibly damage something nearby. Do you have a soldering iron? That's a better way to remove it.
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Yes I have. But: the LED ist running on the GPIO2. If I pull GPIO2 LOW, than the LED turns on. Would this have an effect on the GPIO2 Pin usage if I desolder the LED ?
GPIO2 is a boot pin. If it's pulled Low at start then it will fail to boot.
Why do you want to remove it? It's a good indicator when Serial1 is used.
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If you decide to cut it off turn off the power before cutting. The amount of damage depend on your skill.
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I know that this is a boot pin. I am gonna use it anyway. I need every single pin on the ESP. I have to remove the LED, because there is a LDR in my project. The LED has a big effect on the LDR. That's why I have to remove it 
You could use a marker, some paint, or a bit of tape.
Yes, I first thuoght this as an idea too, using some dark black tape. Maybe I should do this thanks man...
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