Polishing method after making prototype model

The post-processing and polishing methods of the prototype making process can generally be divided into three types: wet polishing, mechanical polishing and dry polishing.

(1) Mechanical grinding: In order to improve work efficiency during large-area construction, mechanical grinding methods, such as electric grinding disc type, vibration type, etc., can be used.

(2) Dry grinding: sandpaper grinding. Suitable for polishing hard and brittle paint surface. The disadvantage is that a large amount of dust is generated during operation, which affects environmental hygiene.

(3) Wet sanding: sanding with sandpaper dipped in water or soapy water. Water milling can reduce wear marks, improve the smoothness of the coating, and save sandpaper and labor. However, when spraying the lower layer of paint after the water abrasion, first, wait until the water abrasion layer is completely dry before applying the next layer of paint, otherwise the paint layer will easily turn white. In addition, substrates with strong water absorption are not suitable for water milling.

There is also a special sanding method: the painting requirements are marked as "light sanding", such as sealing paint, after partial repair, etc. At this time, finer sandpaper and skilled hands should be used. It will backfire.

Pay attention to this problem when polishing. The first is that you need to use very coarse sandpaper for rough sanding and sanding. After removing the rough burrs on the surface, polish the fine lines. Sandpaper can be divided into different grades such as 800 and 1000. Then according to the requirements, the surface of the product is polished to different degrees! After one polishing is completed, spray a layer of putty to amplify the roughness of the product surface. In order to achieve the level of visible flaws with the naked eye. Finally, you can focus on local corrections until the final product finishes the entire polishing process.