Tech UPTechnologyThe liquid pencil arrives

The liquid pencil arrives

lapiz-liquido Pencil or pen? In the future there may not be a choice. The Sharpie brand has developed a new writing instrument called a liquid pencil . The ink it contains is made of liquid graphite, has a slightly darker shade than traditional pencils, and can be easily erased with a regular eraser. And the most surprising thing is that the ink becomes permanent after three days in contact with the air.

The contraption will go on sale in September at a price of $ 5 a pair.

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Braking was tricky

Apart from that, everything worked like a picture book for the railway world record in Switzerland