As I said: take off the outcurved sides of the wood with a raw rasp to smoothen them, then touch them with glue and apply a rough cord binding. You may then stain the hemp binding brown with wood stain. All that hasn't to be done though to make your Katzbalger look good and authentic. It already does, at least to me.
Did you soak the iron parts in olive oil? Smoothen them just lightly with 600 grain paper and oil them!!! You will be overwhelmed!!!!
BTW, are you sure your post was placed in the right thread, my friend?