World is in a revolution in manufacturing methods by 3D printers. In the past years personal computers and printers helped us to spread knowledge and information communication among individuals and institutes so that everyone can write and publish own contents. Same phenomena is happening in production and manufacturing so that we can create and make our personal items. 3D printers have less restrictions and it is easy to create and make shapes. We are able to write our texts in desktop publishing software and print them by printers for many years and now we can design our necessary items and 3D print them. People will learn how to use 3D design software and many will own their 3D printer in homes. Freedom of Design is achievable with Additive Manufacturing technologies such as FDM. Complex features, undercuts, details, and internal features are not a problem when using FDM to create prototypes and production parts. No need to design for manufacture, manufacture for design. For a good reference on design guidelines go to:
And for material selection go to: http://www.solidconcepts.com/materials/fdm-materials/
Computers and printers are under development and they become old and scrap very soon, so you can see many new and usable computers and related systems like printers and scanners were taken out of service every year which is a waste of resources. In our design we decided to use usable and utilizable recycled parts of printers and scanners. These parts are very cheap, heavy duty, and reliable also using those helps to reserve our resources. They are made by high quality materials and work nice. But the problem is that those parts are designed for special purposes and not generally so we should base our design considering their specifications. In usual product design a designer first define needs and specify performance and then choose and purchase necessary parts, here we should find obtainable recycled parts then identify specification. Since we don’t have many options it is better to use similar parts for the design. This is why we chose delta mechanism because it utilizes three similar sliders used for head motion in dot matrix printers. Fused deposition modeling 3D printers generally use a Cartesian mechanism that X, Y, and Z are moved individually. Motion mechanisms are different for each axis and designs are not similar. But in delta mechanism we have three similar sliders installed 120 degree to each other. Motion mechanism and support of an Epson flatbed scanner was also used for extruder assembly and support of hot end. Figure shows structure and main parts of our 3D printer which is generally similar to commercial delta 3D printers. In the following we will describe each individual section.