Quote Originally Posted by morsa View Post
Thanks PJs.

There is no slot in the ferrule nor in the handle. I use leftover plumbing brass nuts rounded at the Unimat lathe; once finished both elements, they are assembled by hand. Here is an amplificated picture:

Click image for larger version. 

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Thanks for the larger pictures Morsa. I can see now how they are joined. Nice idea to re-purpose the brass nuts.