When it comes to electric-filing, there are many ways to incorrectly apply a bit and do damage to nail plates. But with a little care, and a lot of practice, an efile can become a tech’s best friend. A common problem arises when techs apply bits at improper angles. Nail plates are relatively thin, and when techs underestimate the power of an e-file they can go right through the nail plate and cause damage to the nail bed underneath. So if you don’t want to mangle, be careful of your angle.