The Development And Challenge Of 3d Printing

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The Development and Challenge of 3D Printing
In recent years 3D printing arouses focus of public with appearing in a huge number of areas. In this essay, it will describe 3D printing which is one important application of rapid prototyping.
Rapid prototyping (RP) is general for several techniques, which read in data from computer-aided design (CAD) drawings and manufacture automatically three-dimensional objects layer-by-layer according to the virtual design (Sanna 2008).
3D printing also known as additive manufacturing is any of various processes used to make a three-dimensional object. In 3D printing, additive processes are used in which successive layers of material are laid down under computer control. These objects can be almost any shape or geometry and are produced from a 3D model or other electronic data source. A 3D printer is a type of industrial robot.
Due to the limitation of space this essay will introduce the basic principle of just four kinds of main printers nowadays and their positive application in construction. The essay left will focus on the two main challenge this technology is facing now and predict the possible development direction.
Basic principle
At the begin of manufacturer,3D printable models ought to be created by a computer aided design (CAD) package, 3D scanner or via a plain digital camera and photogrammetry software This step is called ‘Modeling’. Following the modeling, the second step is ‘printing’. Although the
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