[Ronja] Skateboard a good grinding tool for DIY

[Karel Kulhavy]

I needed to grind down a 5mm LED to 4mm. I tried a sandpaper but that was very difficult
to keep the right position of the LED. So I got an idea to use my skateboard. There is the griptape which is basically a sandpaper.

So I held the LED in a forceps and drove the skateboard back and forth and that grinded the LED very efficiently and the angle of grinding stayed exactly the same during the
movement. The result was good.

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