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The only problem I have had is if I use colored paper they erase a little of the papers coloring as
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They are great for planners; plans change, no problem, erase
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I teach physics and now I love having the ability to do problems on the document camera and ERASE!!
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In most cases, even better than a pencil!- Smudging is not a huge problem, it dries out quite quickly compared to most gel
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Made a mistake, no problem.
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Only discovered one problem with the pins, since they erase by the heat of friction, if left in a really hot car, or a coffee cup placed on top of a note, the ink will vanish.
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I just opened it up to check what the problem was and blew into the “straw” until a bubble of ink came out and Voila
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Only problem is most pens don't erase and white-out, even dry erase, can make a big mess.
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Awesome, the o ly tuing is that they run out pretty quickly!
