If you are to repair a Phillips screwdriver, you need to polish the tip of the worn-out bits little by little to make sure it is even. Then shift to the unused part of the metal file to do the same procedure on every side of the bits, making sure that all of the parts of the screwdriver bits are smooth and equal.
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Answer:
If you are to repair a Phillips screwdriver, you need to polish the tip of the worn-out bits little by little to make sure it is even. Then shift to the unused part of the metal file to do the same procedure on every side of the bits, making sure that all of the parts of the screwdriver bits are smooth and equal.