Most people need to add support when printing models with 3D printers , and they have a deep understanding of the time-consuming and labor-intensive process of removing the support process: the strength is not enough, the support is difficult to remove; if the force is too large, the model will be destroyed. The hard-working model, when the last moment is destroyed, I feel distressed when I think about it. So is there any way to avoid support? How can we deal with the relationship between support and model? To answer this question, we first need to know why we need to add support. FDM works by heating the material to a semi-fluid state and extruding it on the printing plate in layers. Although it solidifies faster, it is affected by gravity during the printing process, when a certain face and vertical of the model When the line angle is greater than 45° and is suspended, the material will fall before solidification, which is the 45° angle principle in 3D printing . We often encounter floating models. At this time, support is the only choice. If you don't master this method, the printable model will be greatly reduced, and the real fun of 3D printing will be lost. Although Petr Novikov, SasaJokic from the National Architecture Society of Catalonia (IAAC) and the Reese Raman Lab in the Netherlands designed the 3D printer in the Mataerial mode, they made an outstanding contribution to “anti-gravity modelingâ€. However, this technology requires a fulcrum, can not be printed anytime, anywhere, coupled with the limitations of hot melt polymeric materials, and has not been widely used. Of course, if you use laser sintering technology SLS or 3D printing with powder materials, we will only discuss the FDM technology support problem. Mataerial mode 3D printer For the support problem, the following points will be noticed, which will reduce a lot of trouble: 1. Parameter setting when slicing Specifically, it includes support structure type, support critical angle, support and model spacing. 1 Support structure type: The structure type has grid, line, tree, column, grid, column, tree support are difficult to dismantle, grid support is more expensive, linear and tree shape saves materials and takes time, among them Tree support is the most economical material. 2 Support critical angle: the angle between the surface and the vertical line mentioned above. If it is larger than the set angle, the bottom will appear support. 3 support and model spacing - x / y axis: the distance of the support from the model, the default value of 0.7, the greater the distance, the easier to remove, but the poorer the support effect; the closer the distance, the better the effect, the more difficult to remove, So the minimum should not be less than 0.4. 2. The orientation of the model when slicing Try to place the model at the best possible angle. If necessary, you can also cut the model into multiple parts to print and then reassemble. Different placement angles, the materials used for the support are also different, and the printing effect is naturally different. For example, if you play a cylinder, if you put it vertically, you don't need support at all. If you put it horizontally, you need more support, and it will be more difficult to peel off later. (red is added support) 3. Selection of support materials Support materials can choose water-soluble materials, this is mainly for 3D printers with independent heating of double nozzles. For example, Hongrui 3D printers are mostly single and double nozzles. It can also be used in this way, one for spraying out the model material and the other. Used to spray the support material, the characteristics of the two materials are different, and it is relatively easy to remove the support after the production is completed. Hongrui 3D printer X500 model double nozzle detail map When peeling off the support, you must have patience and nuance. If the above methods are used, the tragedy of the model and the support is difficult to peel off and the model is destroyed. Don't be discouraged, carefully analyze the reasons and avoid making the same mistake next time. After all, correct The result is derived from a large number of errors. Dining Chair,Pp Plastic Chair,Leisure Back Chair,Home Dining Chair vchomy , https://www.jsvichen.com
——Z axis: the distance between the support and the height of the model. The default value is 0.15. The same is the larger the distance, the easier it is to remove.
The setting of the spacing is mainly related to the personal experience and the print model. If it is a newbie, it can be set according to the default value. 
