3D-Printing – An Effective Technique
The 3D-printinghas found its important place in all renowned industries. On one side it is used in jewelry designing and on the other hand it is an important engineering technique. The features due to which it has got rapid fame include its cost effectiveness, fast results and ease of use. It also provides the facility of overhanging. This unique characteristic is given prime importance in this technique.
Many methods for this technique have been introduced in the market. On the basis of their benefits and drawbacks, industries chose suitable one for their production processes. One of the techniques is digital light processing (DPL). In this, a vat of the liquid polymer is exposed to light from the DLP projector under safelight conditions. By doing this, the exposed liquid polymer becomes hard and tough. This gets the shape of the plate which moves in the small increments. In this way liquid polymer is again exposed to the light. This is the continuous process. It is repeated till the model is built.
After completing this part, the liquid polymer is poured from the vat. The solid model is left behind. We require this model which is the finished product of the 3D-printing technique. One of the most famous examples of the DLP rapid prototype system is the ZBuilder Ultra. Another famous approach is deposition modeling. This was proposed by a famous scientist called Stratasys. It is a traditional rapid prototyping. It has its own significance. Its uniqueness leaves all other types of printing behind. It uses a nozzle to deposit the molten polymer over a supported structure. It is deposited layer by layer. It gives neatness to the final structure. There are very few chances of error in this method as is a step by step process. As already discussed, each type of printing has its own uniqueness.
The selective fusing is another latest technique of print media in a regular bed. In this process, the fused media serves to support overhangs and the thin walls in the part which is being produced.This reduces the need of auxiliary support for the item. No temporary attachments are needed for the work piece. Mostly a laser is used in this process. The laser sinters the media and form the solid. There are some very famous examples in this context. One of them is direct metal laser sintering (DMLS). In this, metal is used as a subject.
In is expected that in the 3D-printingtechnique, ultra-small features may be made by the 3D micro fabrication technique of the 2-photon polymerization. This is a stylish approach in which the wanted 3D item is formed in the block of gel. This block of gel is focused by the laser. This gel is specially made to serve this purpose. The gel is cured to make solid only in those places where the laser is focused. This technique uses the nonlinear nature of the photoexitation. The remaining gel is useless. It is removed by washing the subject. The 100 nm size of the item is quite easily produced.
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