Rapid Prototype & Plastic Prototype & CNC Prototype & CNC Machine Prototype

To create an SLA rapid prototype, first a three-dimensional CAD part is “sliced” horizontally into cross-sections between 0.002 and 0.006 thick. The slices are fed to 3D system’s stereolighography apparatus. Inside the stereolithography chamber of the apparatus, an ultraviolet laser traces the first layer of the part on a metal platen, submerged just below the surface of a vat of photo-sensitive polymer, wherever the laser touches the liquid, it solidifies. One the layer is traced, the platen sinks the thickness of a layer below the level of the liquid. A sweeper bar moves across the surface of the last layer, making sure there is the exact amount of resin on top. The next layer is then built upon the previous layer. In this manner the entire part is built from the bottom up, with the completed section of the part remaining submerged.

SLA advantages:
a) Lead time can be shortened to 3-5 days.
b) Cost can be saved on developing new products.
c) No matter how complex your product is, we can make the parts for you without tooling if you have 3D drawings on hand.
d) Increased product quality and value
c) Increased overall company competitiveness and earnings potential.
e) Many others……

Disadvantages:

The strength of the material is not very high. Parts can not be screwed too many times.

SLS or Selective Laser Sintering rapid prototyping technology uses metallic powders or thermoplastics. This technology is quite similar to stereolithography. The finishing time is reduced as the undercuts and overhangs are given support by the solid bed of powder. The surface finishes are not as good as

stereolithography. It requires no final curing like SLA, but the object is porous as it is sintered. The mechanical characteristics of the object can be improved by infiltrating the object with some other material as required by the application.
SLS advantages: high accuracy, short lead time, low cost. Material: ABS, Nylon.

CNC prototyping is a state-of-the-art technology of modern industry. With the integration of computer aided design (CAD), computer-aided manufacturing (CAM) and computer numerical control (CNC) and other advanced technologies, a solid block can be cut by milling after the compilation of 3D data from a computer.

Clamping the work piece, the digital control centre will select the appropriate machine tool according to different processes, automatic choose and replace cutting tools, change the spindle speed automatically, adjust the feed rate per different trajectories and different supporting functions. Several work piece surface will be finished on the multi-procedure processing, the whole process is programming controlled and not subject to any influence of human factors.
CNC Prototype advantages:
a) Material (ABS, POM, transparent PMMA, PP, PC, Cupper, Aluminum, Bakelite) are can be used. Materials are of

high strength and high temperature resistant features.
b) High precision, can reach 0.05-0.1mm.
c) with the art of surface. It is a good choice for exhibition.