Butt cap troubles

[ShyMoth]

Hey there, Im new to these forums. I need help. I work at a leather repair shop and have made many many knife sheaths at this point. However my boss gave me a knife that a customer dropped off that needs a new handle. Im entirely positive I can make a staked leather handle no problem. The problem is that the man lost the original butt cap to the knife and the tang is unlike any I've seen pictures of from the how tos I've been looking at. I was wondering what I should do about the butt cap. Here is a link to the knife.
http://img.photobucket.com/albums/v287/FiverRah/Mobile Uploads/20140523_122323_zpsb31693c1.jpg

 

[Hengelo_77]

I am by no means an expert but I've done e few buttcaps with threads.
The chalange here is how to attach the thread to the tang. I assume the tang is hardened as well. That makes drilling/filing it hard.
The way I'd do it is to make a piece of metal that on the one side hooks in to those notches and on the other side will hold the head of a screw with thread. (drill holes and file with small needle files)
Then cut threads in a flat piece of metal and screw it on the thread of the screw.

 

[Stacy E. Apelt - Bladesmith]

The only time I have seen that type of tang end was on cheaper handles with aluminum or pewter ends. They were pinned into the notches from the side, or compressed.

The simplest way to re-handle that tang is to grind the last 3/4" of the tang down, leaving a central stud. This stud can be used one of three ways to install the butt cap:
1) The tang end stud can be made round and peened on the butt cap end. This is the traditional method.
2) The tang end can annealed and threaded, with the new cap screwed on.
3) The tang end can be drilled and the new cap pinned to it.

Pretty much any good knifemaker should be able to do it for you if you don't have the skills and equipment.