Do you ever wonder why some of us just really love our 3d printers, or why would anyone want a 3d printer? Maybe you have asked how does a 3d printer work? All of these questions I will answer along with fixing a problem many of us have experienced with gaps between our 3d print layers. Over my time using a 3d printer I have run into many different things that have caused these gaps. For this video, I will focus on fixing under extrusion.