First, polishing and polishing
The 3D printed model has a stepped layer on the surface of the model due to its special molding method. These layers can't be avoided even with the finest printers available today. Although we can adjust the parameters or the placement of the model by layering to make the layering feeling less obvious, the fine lines will affect the overall perception of the model.
Therefore, in order to remove these layers, we need to use sandpaper or trowel to polish. We use different tools for sanding depending on the roughness of the surface. Generally, it is possible to use a file like the trace left by the support. It is convenient to use sandpaper on a large surface. The sandpaper is divided into different model numbers according to the size of the particles, and the smaller the mesh number, the larger the particles. For materials such as pla and abs, 80, 120, 600, 800 to 2000 sandpaper is often used. 800 to 2000 sandpaper is mainly used for polishing to eliminate the layering. Therefore, when using sandpaper, it is necessary to polish from the beginning of the small mesh to remove the layering, and finally polish with a large number of sandpaper. Of course, a lot of dust will be generated during the grinding process, so it is recommended to sand the sandpaper or the model and then sand it, which can effectively reduce the dust.
Second, the model repair
I believe that when you print the model, you will encounter the fault or the defect caused by the model for some reasons. In this case, don't rush to throw the model into the trash. If the bad place is not big, your model may still be able to Rescue it. Let's talk about tools first. The most common way to use 3d printed models is to fill the soil. The soil is also divided into several categories, which can be shaped with ab fill soil, toothpaste for filling, and water to fill the seams. For relatively large gaps and defects, ab fill soil can be used for repair. When used, a soil and b soil are mixed to fill the gap. The advantage of ab fill soil is its plasticity, such as the missing part of the model can be used to repair the ab soil. Toothpaste is a kind of paste-like substance like his name, which can be a good filling effect for the general gap. After the restoration of the soil is completed, it is polished, and the place where the model is faulty is difficult to find.
Third, the use of primer
Primer is a necessary step before the model is colored. Generally, water is used as a primer. In addition to being able to fill small gaps, the main function of the water-filling soil can also expose the surface of the model to facilitate inspection of the outer surface of the model. In addition to this, it is also conducive to the coloring of the model, and water replenishment can help the pigment adhere to the model. The color of the primer can be determined by the primary color of the color. Wait until the paint is dry and continue to sand it in a rough place until it is smooth. If your model has been processed in the above steps, it is difficult to see the traces of 3D printing, then you can officially color it.
Fourth, the model color
In addition to the fineness of printing, the quality of a model depends on its coloring. Coloring this link can be said to be the most interesting place besides design. You can choose the image as a reference to restore, you can also create according to your own preferences, of course, the final effect of how you like it is ok. Coordinating meticulous coloring can sometimes save a flawed model, and of course the failure of coloring can ruin all previous efforts.
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