We are developing a Multi Material 3D printer to print an object with different kind of soft and hard material in a single run. It is expected that the combination of printing soft and hard material will be a new kind of 3D printer. Our main printing material is conductive based soft filament made by our laboratory "Soft and Wet Matter Engineering Laboratory", other different soft filament and hard plastic filament to create fully functional, multi material objects in a single printing run with greater variety and lower cost than other single material printing. In addition, we are developing a special type of Extruder, by using this we will be able to print both soft and hard material with one printer. This will be a new era of 3D printer. Such kind of 3D printer will possibly be a good STEM tool in medical sector and robotics.