This video explains how to create a spare key that works for any lock. Learn how to make a key copy and discover simple techniques for unlocking door locks or padlocks. See how to create DIY picking ...

Learn how to open a lock without a key using simple techniques that don’t require any special tools. In this video, discover three effective methods to unlock a door without the need for lock ...

Brunnian links are a type of nontrivial link – or knot – where multiple linked loops become unlinked if a single loop is cut or removed. Beyond ‘fun’ disentanglement toys an… ...