Researchers at the Technical University Delft (TU Delft) used 3D printing to create objects that fold like origami when heated.
Other researchers called these changing 4D Printing because time or temperature adds as another dimension. The researchers now have published their work on how they manipulated 3D printed objects which change their shape.
To achieve that the researchers printed structures with conventional 3D printers of different manufacturers like Ultimaker, EnvisionTEC and Formlabs. These objects were combined with SMPs. Two, three or even more layers of 3D printed material and SMP were glued together.