I do not like using a bastard or any other file on a new broadhead--> that is only for something that has been shot and needs the edge broaght back,,,,,,,,,,,, I like to use a KME extra fine hand sharpener (from any hardware store) first until I feel the edge is there and then I go to a ceramic rod sharpener that comes with the simmons sharpener system from simmons but can be bought seperate,,,, so mount the broadhead on the arrow and I do about 10 strokes on each flat side where you lay the sharpener across two edges at once then tuen the broadhead to the next two edges and keep repeating,,, it is VERY IMPORTANT that the sharpener feels like it is just sliding on glass and not really digging in or fileing anything (which means uneven edge) do this on all 3 sides for about a 1/2hr for the first time and it will turn into something you can shave with..... remember take about a 1/16" off the very tip so it doesn't curl as easy.