I have a KaBar Becker 10 w/ black powder coating on the whole blade except the edge. I've seen videos to remove ALL of the coating, but I only want to remove a spot/length at the spine to use on a ferrocium rod. Any tips on the best way to remove this coating in 1 spot (sandpaper, Dremel, etc.)? I wanted all the tips I could get so I don't ruin the blade.