[header] How to open cable ties [title] Find the locking mechanism. [step] If you look at a ready-to-use cable tie, notice that one end tapers to a point, while the other is capped with a tiny cube. When used, the pointy end is fed through a slot in the cube to form a loop and then pulled tight. 
The cube is the locking mechanism that keeps the tie from worming back out through the slot, so look for that. [title] Bend the tie's loose end back.