Two elements or materials can be joined by riveting, bolting, welding or gluing. In the world of plastics, the latter has a subordinate role, but sometimes glue may be the most practical solution. For example, at the request of the car industry, a college in Germany is working on developing an adhesive that not only bonds glued surfaces but can also absorb some of the energy of an impact in the event of an accident. When a designer chooses adhesives for a task, it is not easy to choose the most suitable type from the wide range of options on screen. But the Substratec navigator, available online, makes it quick and easy to find the optimum version. And in 2021, 3D printing may have a similar navigator.