How to remove the knife marks on the surface of the plastic prototype

It is well known that no one is perfect, and the prototype is no exception. In CNC machining, the prototype model will leave more or less some flaws, such as knife marks and edges, and what we have to do is to minimize defects and strive to smooth and smooth the prototype surface, facilitate the processing of the next process. Today's mini-editor will talk about the method of handling plastic prototype defects for the plastic prototype.

when the plastic prototype is CNC processed, since the blade is uneven, the cutting force is large during processing, and the clamping is not reliable, the knife marks will be left on the surface. These knife marks can be seen by the naked eye but cannot be touched by the hand, so they need to be processed, the specific method is to use sandpaper for polishing or polishing.

sandpaper has different grades, the smaller the number, the thicker the sand, the larger the number, the smaller the sand. When polishing, it is first polished with coarse sandpaper, and then with fine sandpaper, so that the polished prototype is smoother. If the order of sandpaper is reversed, the effect will be greatly reduced. During this period, some spray ash treatment can also be used to detect the effect and quality of manual polishing.

CNC prototyping does not guarantee that the appearance of the product is perfect, so it is necessary to remove the knife marks by polishing or polishing.

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