Metal File
A metal file is the most basic way to sharpen a broadhead and also the most convenient. Start by covering a metal file with file chalk. This is used to deter the build-up of metal chips in the file grooves which create an uneven blade on the broadhead. Any fine grit metal file can be used for sharpening quickly and with ease. Start by laying the file on a flat surface. Always pull the broadhead blade in one direction against the grain of the file, a back and forth motion will ruin the blade on the broadhead. Carefully pull the broad head against the file on each side of each blade until desired sharpness is achieved. It is best to wear leather workmen's gloves for protection since broadheads are excessively sharp and even the slightest touch can lead to a cut.
Belt Sanders
Any hunter that is fortunate to own a belt sander at home can use it to sharpen his broadhead. Start by placing two sides of the blade flat against the sanding belt while the machine is off. Always use fine grit sandpaper when sharpening a broadhead. Hold blade steadily in place while the machine runs. It is important to only do 3 to 5 seconds of sanding at a time. Belt sanders are capable of wearing down the blade quickly as well as causing the blade to overheat and potentially ruin the internal structure, which keeps the blade aerodynamic.
Hollow Grinding
Hollow grinding techniques can also be used to sharpen a broadhead while it is still mounted. Using a 6-inch bench sander equipped with a fine grit wheel, carefully pull the blade across the paper. The pulling action should be completed starting at the edge of the wheel and pulling across towards the point of the blade. Finish sharpening by honing the blade, using ultra-fine grit sandpaper and light pressure. Water works as the best lubricant for polishing the edges along with tanned leather. Leather should be mounted to a hard surface to create a taut work area for polishing the broadhead.