The document discusses the development of a portable and easy to use 3D printer. It begins with an abstract that outlines the growing additive manufacturing market and benefits of 3D printing such as faster production and ability to easily reproduce parts when needed. The introduction provides background on additive manufacturing and how 3D printing works by building objects layer by layer from a CAD model. The literature review then summarizes several research papers on topics like the status and development trends of 3D printing technology, components and operating theory of 3D printers, environmental and energy impacts of 3D printing, and development of an open source metal 3D printer. Finally, the methodology explains the aims of making an affordable 3D printer using components like an Arduino Mega,