Tool, you have access to a number of surprising tools. Here's how to make the most use out of your Leatherman's file.

Here, we present the secret nail files . . . 1. Nails are mostly made from keratin, a fibrous protein substance also found in hair. Although fingernails may seem brittle and easily broken ...

For such a simple job there is a lot of variation in both material and shape when it comes to choosing a nail file. We find metal files too harsh (they can cause splintering), so we’ve avoided ...