Red light pen tip is not transparent
This is the correct answer! Quite common among the "fancier" pen brands Why isn't it more common? This is just a cheapo pen from walmart It is common. It was fine yesterday, but today the tip stopped working even though the eraser still works. Frustrating, isn't it? This scenario underscores the critical importance of maintaining the tip of your stylus pen. Ok so i had the exact problem with bunch of uni ball signos i bought on flee market. The cause is commonly blamed on rubber sacs releasing sulfur and causing oxidation of the plastic.
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