3d printing rapid prototyping / Site index
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With over ten years of experience in 3d printing rapid prototyping solutions based around interactive technologies, and a unique combination of creative and technical skills, huibao can deliver solutions to fulfill our most demanding clients' expectations in 3d printing rapid prototyping.

Drawing on our in-depth knowledge gained from years of first hand experience working in these areas. The best way to see what we can do is to visit our office or email us to arrange an appointment. we are showcasing a number of new technologies to provide 40ft wide stereoscopic 3D projection for the concept that combines a display of the finest cars on the planet, will utilize two 16K lumen DLP projectors and we 3d printing rapid prototyping uncompressed stereo playback server. It will also be the first time we deploy a brand new polarizing filter technology that increases light transmission by more than 50% over standard polarizing filters to achieve a super-bright image from a single pair of projectors on such a large screen.
The term 3d printing rapid prototyping refers to a class of technologies that can automatically construct physical models from Computer-Aided Design (CAD) data. These "three dimensional printers" allow designers to quickly create tangible prototypes of their designs, rather than just two-dimensional pictures. Such models have numerous uses. They make excellent visual aids for communicating ideas with co-workers or customers. In addition, prototypes can be used for design testing. For example, an aerospace engineer might mount a model airfoil in a wind tunnel to measure lift and drag forces. Designers have always utilized prototypes; RP allows them to be made faster and less expensively.


In addition to prototypes, 3d printing rapid prototyping techniques can also be used to make tooling (referred to as rapid tooling) and even production-quality parts (rapid manufacturing). For small production runs and complicated objects, rapid prototyping is often the best manufacturing process available. Of course, "rapid" is a relative term. Most prototypes require from three to seventy-two hours to build, depending on the size and complexity of the object. This may seem slow, but it is much faster than the weeks or months required to make a prototype by traditional means such as machining.

These dramatic time savings allow manufacturers to bring products to market faster and more cheaply. In 1994, Pratt & Whitney achieved "an order of magnitude [cost] reduction [and] . . . time savings of 70 to 90 percent" by incorporating rapid prototyping into their investment casting process. 5
At least six different rapid prototyping techniques are commercially available, each with unique strengths. Because RP technologies are being increasingly used in non-prototyping applications, the techniques are often collectively referred to as solid free-form fabrication; computer automated manufacturing, or layered manufacturing.

The latter term is particularly descriptive of the manufacturing process used by all commercial techniques. A software package "slices" the CAD model into a number of thin (~0.1 mm) layers, which are then built up one atop another. 3d printing rapid prototyping is an "additive" process, combining layers of paper, wax, or plastic to create a solid object. In contrast, most machining processes (milling, drilling, grinding, etc.) are "subtractive" processes that remove material from a solid block. RP’s additive nature allows it to create objects with complicated internal features that cannot be manufactured by other means.
Of course, rapid prototyping is not perfect. Part volume is generally limited to 0.125 cubic meters or less, depending on the 3d printing rapid prototyping machine. Metal prototypes are difficult to make, though this should change in the near future. For metal parts, large production runs, or simple objects, conventional manufacturing techniques are usually more economical. These limitations aside, rapid prototyping is a remarkable technology that is revolutionizing the manufacturing process.
Although several rapid prototyping techniques exist, all employ the same basic five-step process.

  • The steps are:

  • Create a CAD model of the design

  • Convert the CAD model to 3d printing rapid prototyping format

  • Slice the STL file into thin cross-sectional layers

  • Construct the model one layer atop another

  • Clean and finish the model


CAD Model Creation: First, the object to be built is modeled using a Computer-Aided Design (CAD) software package. Solid modelers, such as Pro/ENGINEER, tend to represent 3-D objects more accurately than wire-frame modelers such as AutoCAD, and will therefore yield better results. The designer can use a pre-existing CAD file or may wish to create one expressly for prototyping purposes. This process is identical for all of the 3d printing rapid prototyping
build techniques.


Conversion to STL Format: The various CAD packages use a number of different algorithms to represent solid objects. To establish consistency, the (stereo lithography, the first 3d printing rapid prototyping
technique) format has been adopted as the standard of the rapid prototyping industry. The second step, therefore, is to convert the CAD file into  format. This format represents a three-dimensional surface as an assembly of planar triangles, "like the facets of a cut jewel." 6 The file contains the coordinates of the vertices and the direction of the outward normal of each triangle. Because this files use planar elements, they cannot represent curved surfaces exactly. Increasing the number of triangles improves the approximation, but at the cost of bigger files size.

Large, complicated files require more time to pre-process and build, so the designer must balance accuracy with manageability to produce a useful  file. Since the 3d printing rapid prototyping format is universal, this process is identical for all of the 3d printing rapid prototyping build techniques.