3D printing|complex structure needs "support" assistance



3D printing abandons traditional subtractive manufacturing and brings layer-by-layer additive manufacturing. It organically combines technology, innovation, and intelligent manufacturing to create a new manufacturing method. Objects with any complex shape can be easily "printed". However, many people do not know that not all objects can be successfully printed, and some complex models cannot be formed without support. In particular, the geometric structure of the object is quite special, and the lower layer of the structure may be "hollow". Therefore, the support structure is particularly important when printing.


Why does the printed object need to be supported?



Why should support structures be added to the model of the printed object? The explanation from physics is that because the earth has a strong gravitational force, any object placed on the earth cannot escape the shackles of gravity, and a single object, if gravity is too large and the supporting surface is too small, can not maintain its own balance. At this time, it is necessary to increase the support point to offset gravity.


The principle of 3D printing technology requires the upper structure of the model to be supported by the lower part. Therefore, if some parts of the printed model are suspended, it is necessary to design the support structure when printing.


Classification of Model Support



It can be seen that in the process of 3D printing, adding support to the model is an essential link. The success or failure of the support directly determines whether the model can be successfully printed in the end. According to the characteristics of the model itself, three types are generally selected for the model: full support, partial support and no support.


Full Support



Full support is suitable for prints with a complex model structure, many parts, scattered centers of gravity, and no regularity. It is worth noting that some parts of this type of model are relatively slender and there are many suspended parts.


Partial Support

 
As opposed to full support, partial support refers to adding support to a certain point or certain parts of the model. Some supports are used more in the actual printing process. Anyone who prints often knows that removing supports is not only cumbersome, but may also have a negative impact on the appearance of the model. Therefore, under the premise of ensuring that the model can be printed successfully, the less supports added, the better. Partial support is suitable for models with a relatively large body or center of gravity, with a single structure, and only some positions are suspended at an angle greater than 45 degrees.


No Support

 
No support is suitable for models with "big bottom and small top", that is, the overall shape is cylindrical, conical or cube-shaped, the chassis is relatively large, or the model is extremely simple in structure. The commonality of these models is that the base is large and the top is getting smaller and smaller, so that in the process of stacking, it will not fall due to the suspension of a small part


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