A file should not be used in a “sawing” motion (pressed back-and-forth), but rather pushed forward then lifted off the work piece each time. The cutting teeth on a file are forward-facing, which means they work only when the file is moved in that direction.Click to see full answer. In this regard, how do you take care of files? Tips for Taking Care of Your Files Take Out the Trash: Eliminate “junk” files that can burden your system. Guard the Goods: Wipe away confidential data and protect your privacy. Reconnect with Old Files: Fix broken shortcuts that can lead to annoying errors. Don’t Be Redundant: Free up valuable space by organizing duplicate files. what material is used for making a file? carbon steel Besides, how do you use a needle file? Needle files are small files used to finish and shape metal. They have a smooth edge on one side so they don’t mark the metal when you are filing in tight spaces. They come in various shapes – round, half round, square, triangle, flat and barrett.Is there a difference between wood and metal files?Mill files may be used to shape wood (they perform best on hardwood); however, wood files will not withstand use on metal. File lengths are given in inches, measured from the end of the file, called the point, to the heel (see illustration). Use large files for large surfaces, small files for small surfaces.