Another version of a homemade chain key

To make a universal key, you need a carob donor, a piece of a bicycle chain and a locking device, which is a sleeve with a bolt. The key can be taken broken or not needed, it will be the basis of the tool.

To make a locking sleeve, you need to drill a round timber in the center and on the side where the thread is cut, install a bolt, or a stud with a lamb. When the chain is put on the nut or bolt, tighten the chain by hand and tighten the lock bolt.

The chain wrench is convenient to use and not difficult to make, this tool is a good example of remaking a broken tool.