“The world of 3D printing has flourished in recent years, moving from an expensive, complicated technology to one that is simpler and relatively easy to understand, whether the work involves projects for the construction industry or producing parts for the defence industry and the like.”
First of all, how does it actually work?
A 3D printer works by an additive method: it adds material and builds the object up in layers until the process is complete. This is an innovative approach, and different from the subtractive method used until now, in which material is removed from a block until the required object emerges. An additive method provides maximum accuracy in printing, compared with a method in which you remove material that cannot be put back. That accuracy shows up in the ability to plan the job down to the quantity of material, with the printer doing the work at no risk of wasting material. There is control over the entire process, from the drawing board to the final product. It is important to understand that there are different kinds of 3D printers, each with its own uses and capabilities. The various machines differ in characteristics such as print resolution, print speed, cost, and the materials they are able to work with. 3D printing is gathering pace. 3D printers have become easy to use and operate, and they make it possible to create models and various accessories without being an engineer. Machines now sell at lower prices and are gaining a strong presence in large industries such as medicine, the military, architecture, fashion design and even furniture. In the military, for instance, 3D printing makes it possible to produce parts and spares for aircraft at high levels of accuracy and fit. This popularity comes mainly from the elegance, simplicity and precision that 3D printing allows. Its price, together with its ease of use, has driven strong demand for this remarkable machine.
What can you print with a 3D printer?
There are domestic and small machines that sit on a desk, on which you can produce models and small parts for various uses. There are also especially large machines built to print aircraft parts and even houses, which lowers and eases the cost of construction and maintenance. What these sizes and this availability mean is that the printer becomes a central working tool, available to almost anyone who needs one. One industry celebrating at the moment is medicine, where organs and parts that will help in future have begun to be printed. The prominent examples mentioned earlier involved printing tissue, with cancerous growths printed onto that tissue by a 3D printer for research purposes. The whole project was carried out with a 3D printer, at a level that manages to mimic the real process in a living body. Housing benefits from this too: in Austin, in the United States, a first printed neighbourhood is being built. That is significant news for the printing field, and it affects the housing sector. Printing with plastic. The main material used in 3D printing is plastic, in a process called extrusion. The process uses high pressure and compression to push a given material through a smaller cross-section or opening called a nozzle. The plastic that goes through extrusion is reshaped according to the shape of the nozzle. After this the three-dimensional model is built up as layers, one on top of another. Types of 3D printing technology: 1. FDM (Fused Deposition Modeling) – FDM printers are based on thermoplastic materials. Materials of this kind are heated and can be shaped into the models you want, while the rest of the heated material’s properties do not change significantly. It is a long-established and particularly inexpensive method, based on melting and depositing material injected through a print head. The advantage of this method is that it is cheap to use, and it is also flexible to changes and adjustments, and of course fast.