Building a box joint jig for my homemade router table

In the video below i will show you how to easily build a tool to make accurate box joints. These joints are highly popular when making wooden boxes and wooden toys. The base of the tool will be secured to a router table so that it does not move left or right and the top will move left or right on fixed length steps. It is important that the router bit is the same size as the step length. Total cost of materials is about 7-8 Euro.