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For natural nails, it’s best to keep a nail drill at a speed of approximately 2,500 to 6,000 RPM. Using a faster speed may damage the nails. To repair a crack in acrylic nails, use a speed of approximately 3,500 to 6,000 RPM and hold the nail drill parallel to the nail. Don’t use cuticle oil when preparing the nails for an electric nail drill.
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