How do you sharpen an old, chipped, and rusty hatchet without it taking all day /out/? I'm restoring my dad's old hatchet from 1998 and just to file out the chips took a few hours. The blade is reasonably sharp now (the photo is from the first sharpening, I sharpened it two more times and it easily shaves hairs now) but I do not know how to restore the pickling on the axe head to keep it from rusting further.