Lent my khukri to my dad (he thought it looked cool and he wanted to clear some brush) and he managed to whack a tree that had chicken wire wrapped around it. Two chips on the blade (I'll post pictures tomorrow if I can). How can I fix this? I don't have a grinding wheel and I don't want to ruin the khukri, and I don't want to try to reprofile an appleseed grind in any case.