Allan, your third photo is what I'm used to seeing. The fuze body is reduced in diameter where the detonator crimps on, and the det is crinped around that part of the fuze body with a double crimp. If you don't have crimpers, you can fudge it by wrapping some copper wire around the area were you want the crimp, and then squeeze the wire with a vise or pliers, working around the circle, so the wire pushes the det material into the grooves of the body.
Allan, your third photo is what I'm used to seeing. The fuze body is reduced in diameter where the detonator crimps on, and the det is crinped around that part of the fuze body with a double crimp. If you don't have crimpers, you can fudge it by wrapping some copper wire around the area were you want the crimp, and then squeeze the wire with a vise or pliers, working around the circle, so the wire pushes the det material into the grooves of the body.