Dip the eraser into the water. Gently knead it and squeeze it with your fingers until you can feel it begin to soften. Find a paper towel and dry the eraser. Place it in a cool dry place to completely dry to normalcy.Click to see full answer. In this way, why is my eraser hard?The problem with rubber erasers is that you have to “rub” for them to be effective. That requires pressure and pressure can push some graphite deeper into the paper. Also, the crystalline structure of graphite is made up of flat sheets – that’s why it’s used as a dry lubricant.Likewise, can a kneaded eraser dry out? Kneaded erasers don’t really dry out, not like a wet kitchen sponge dries out if you leave it on the counter. Kneaded erasers do not shed noodles the way pink or white erasers do… rather than shedding the graphite/charcoal, they absorb It. Thereof, what should I do if my kneaded eraser is hard? Grab the eraser at opposite ends and pull it apart until it breaks. Then, squish the pieces back together. Repeat this process several times until the eraser is fully kneaded together in a soft and malleable ball. Cut the eraser in half or quarters if it is too stiff to knead at first.What can you do with old erasers?Remove stuck-on grime from computer keyboards with a small eraser. Once you’ve loosened the dirt, use a hair dryer on cool to blow it away. Shine patent leather shoes and remove scuff marks with an eraser. Use wedged shaped pencil erasers and replacement caps on glue bottles.