Six 3D Printing Post-processing Methods
Many products produced by ordinary 3D printers are flawed, and the surface is usually rough. This will not achieve the results you want, and it may also cause some waste of costs. What should we do when we encounter these problems?
Sandpaper Polishing
Sandpaper is the most common sanding tool. It should be noted that some water should be added before sanding to prevent the material from being too hot and fluffing.
Generally, the lower the label (400/600/800/1000/1200/1500), the larger the sandpaper particles, and the printing order starts with the lowest.
However, because the surface flatness of the printed items is different, there is no need to polish them in a fixed order. You can also go directly to 800 after 400 is used up, mainly according to the actual situation at the time.
Acetone Polishing
Acetone can also dissolve ABS materials, so ASB models can also be polished with acetone. It mainly uses acetone steam fumigation 3D model to finish polishing.
PLA materials cannot be polished with acetone. It should be noted that acetone is a harmful chemical substance. It is best to complete the operation in a well-ventilated environment and wearing safety equipment such as gas masks.
PLA Polishing Liquid
In fact, it is acrylic glue diluted with water, and the main component is a mixed solvent such as chloroform or chlorinated alkane.
The operation step is to put the polishing liquid into the operating vessel, then hang the model with a wire or rope on the base of the model and soak it in the vessel that has been added with the polishing liquid.
The soaking time is not suitable for too long, about 8 seconds. Like acetone, PLA polishing fluid is also a toxic substance and should be used with caution.
Surface Sandblasting
This is also a very common polishing method, which can also ensure a smooth surface treatment. The operator holds the nozzle to polish the model.
The principle is to use compressed air as the power, which has caused the high-speed jet beam to spray the material to the surface of the model to be polished. Sandblasting is faster than polishing.Regardless of the size of the model, the surface can be smoothed by sandblasting.
Adhesive Assembly
Some models that are oversized and printed with multiple parts or disassembled parts often need to be glued.
It is best to use a little glue to complete the bonding, and then fix it with a rubber band to reasonably promote the bonding more closely.
If you encounter gaps or roughness in the model during the bonding process, you can also use Bondo glue or filler to make it smooth.
Color the model
Painting Method: The operation is relatively simple, and it is more suitable for small models or detailed parts of the model to be colored.
In order to be able to spray the ideal effect, the test spray must be completed before the spray paint is completed, and the operation is checked to see if the concentration is suitable.
It can also prevent the waste of resources reasonably. The spray paint method can also spray the paint evenly on the surface of the model, which greatly saves time.
Hand-painting Method: It is more suitable for dealing with complex details. When coloring, it needs to be painted back and forth two to three times, which can reduce the strokes caused by hand-painting and make the color uniform and full.
So that the pigments can be painted more smoothly and evenly, and some solvents of the same brand can be dripped in the color palette to complete the dilution.
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