3D printing service small door model and hot bed board attachment problem solving
Date of release:2019-01-12 Author:LINGRUI Click:
The high-rise building starts from the foundation. For the 3D printing service model, the level of the base and the adhesion between the 3D printing service machine and the hot bed board are very important. It is the beginning and premise of completing a high-quality model. If there is a problem with the first layer, it will cause problems in the later layers, and even print failure due to the model falling off. This article will introduce you to some solutions.
1, increase the base area
The area of adhesion is directly proportional to the firmness. By simply setting up the layering software, increasing the base area of the model, or adding a hat-like edge, it can provide a good foundation for 3D printing services, effectively solving or avoiding the model falling off. The problem, it should be noted that the thickness needs to be set thinner to facilitate removal after completion.
2, platform surface treatment (tape, solid glue)
Different consumables, as well as hot bed plates of different materials, are the key to the difference in adhesion. For example, PLA and glass hot plate have poor adhesion. Solving this problem is very simple, just add some adhesive on the hot bed board, commonly used with masking tape and solid glue.
The masking tape can be bonded to the commonly used 3D printing service consumables. It is easy to paste and remove. You can try different masking glue to match the consumables. For example, PLA can use white masking tape. The second choice is solid glue. PVP solid glue is more suitable for glass platform. It can achieve good adhesion by uniform coating. It is soluble in water and can be easily removed by water. In addition, daily office glue or hair wax hair gel can achieve the same effect.
3. Reduce the construction speed of the first floor
Too fast construction of the first layer can also lead to poor adhesion, which can be effectively solved by reducing the speed. The commonly used layering software cura provides a setting specifically to achieve this. Click on the Advanced → Speed option to have a bottom build speed that can be set at 20mm/s.
Sufficient construction time can make the consumables adhere to the platform better, and the silk material is sufficient, and the printing is more stable afterwards, and it is not easy to warp and fall off. A suitable first layer condition is that the filaments from the nozzle are flat on the platform, which is ideal.
4, leveling and starting position in the Z direction
A horizontal build platform is critical. If the above methods work together, it is likely that the hot bed is not level, which can cause the model to warp or fall off the hot bed. To solve this problem, you need to manually level the calibration again, and you can upgrade the 3D print server to automatic leveling.
After the platform has been leveled, it is still necessary to determine whether the starting position of the nozzle and the spacing of the platform are appropriate, so that the consumables are smoothly adhered to the platform to obtain sufficient adhesion. If the spacing is too large, it is easy to appear without the platform. If the spacing is too small, it will directly affect the discharge of the nozzle and even damage the nozzle and the platform plate.
5, temperature or cooling settings
When the temperature is lowered, the plastic shrinks, and some of the high melting temperature consumables shrink, which directly leads to the separation of the cooled plastic from the platform, which is why the platform plate needs to be heated to maintain a certain temperature when printing some consumables. In addition, some 3D printing service machines are equipped with a cooling fan to speed up the cooling process, and if the cooling rate is too fast, the model may fall off.
Generally, the suitable hot bed temperature required for PLA consumables is 60~70°C, and the acrylonitrile-butadiene is 100~120°C. This setting can be modified in CURA. There is a speed/temperature column in the basic, and the hot bed can be changed. Temperature to match the conditions you need for your printed supplies. In addition, the fan setting, there is a cooling option in the advanced, remove the fan speed check, the fan has little effect on the PLA consumables, but generally the first floor needs to be turned off, click the ellipsis after "turn on the fan cooling" , you can set the fan opening height.
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