in cutlery there are a lot of "self handled knives" where the tang material is used to create the handle. One way is to draw it out long and loop it back, another way is to forge it out flat and curl it over creating a hollow form to grip. There are probably hundreds of variations!
The process is to figure out what you want it to look like and then do it. Can't take time to type the details for the hundreds of ways it can be done.
You may want to search on blacksmith knifes or brute de forge.
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Thomas
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