Diamond Needle Files

Diamond Files are manufactured by electroplating diamond on to steel blanks using nickel. The smaller the particles, the finer the grit of the file. This is why diamond files are referred to in grits rather like sandpaper. The higher the number, the smaller the grit and the finer the finish. For example a 600 grit diamond file will be much finer than a 220 gr. As you know traditional steel files have teeth rather like a saw blade. The smaller the teeth, the finer the cut of the file, but all these teeth are lined up in the same direction. So this means that with a traditional file it will only cut in one direction like a saw. Even when you have a round or half round file, they still only cut in a forward direction.