Box crimps are also called fold over crimps. They are mostly used for thick cords like leather and suede cords.
Step 1:
Insert the cord into the box or fold over crimp.
Step 2:
Use your pliers to fold one side onto the cord.
Step 3:
Do exactly the same with the other side. The sides might overlap a bit. Release your pliers and pull the cord to make sure it is securely in place.
Step 4:
You can finish off your piece by attaching a clasp to one end of your necklace, and a jump ring to the other end.
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