Well to cut it down I used a hacksaw and file. First I removed the flint and flint spring part, the I unscrewed the screw which takes off the knurrled part you turn, then I took the spining part out of the piece it is held in. You cut down the holder piece to the size you want it and file it flat removing burrs. Then cut the spining part a liitle bit longer then the holder. If you take one apart it should be pretty simple to figure out, just remember that the turning part needs to stick out of the holder a bit in order to attatch the knurrled grip, if you cut it flush you won't be able to turn it.