Date：2016-10-06 08:43:24 Click：1452
I believe that many 3D printing enthusiasts have questions about the first floor printing, all kinds of Alice, the print head to take the part of the problem lingering in the hearts of 3D printing enthusiasts. So how can we do to prevent such problems happen. The 3D printer can help you to minimize the possibility of this happening.
1. Print the level of the bed
Having a horizontal print bed is essential. A low contact position of the nozzle with the print bed will block the nozzle opening and scratch the print bed, which will cause the print wire to not stick to the print bed. This requires that you look at the distance between the printhead and the printhead before you print the first layer, and then adjust the screws underneath the printhead to ensure that the printhead and the printhead are in a relatively proper position, using an A4 Paper pad in the print bed, when the print head is in contact with the A4 paper is the appropriate distance, of course, can also be judged according to the observation of the distance is appropriate, if the printing process to observe the print out of the middle of the fine lines of surplus peripheral residues, The distance between the head and the printing bed too close need to increase the distance between the print head and the print bed, otherwise, if the printing process from the printing bed, need to adjust the distance between the close, this requires careful observation.
2. Higher printing temperature
If both the hot end of the extruder and the bed temperature are heated, you can set the first layer to a higher temperature, which reduces the viscosity of the printing consumables. As an empirical reference, an additional 5 ° C is recommended.
3. Slower print speed
The lower printing speed, is conducive to the extrusion of the melt to reduce the drawing. It is recommended to set the normal printing speed of 30% -50%.
4. The height of the first slice of the slice
The first layer as the adhesive layer requires more heat and more with the extrusion material, the general set of about half the diameter of the nozzle. Such as a 0.4 mm nozzle, with a first layer height of 0.2 mm.
5. Slice a wider extrusion width
Material contact printing bed as possible, this can be set by extruding the first layer width settings, slice software can use the percentage and fixed value in two ways to set. It is recommended to set about 200%, but this is the first layer to be combined and slice the height settings, such as the first layer height is set to 0.1mm, extrusion width is set to 200%, then the actual broadband is 0.2mm, this is less than the nozzle diameter , This will lead to too little out of the fuse printing failure. The first layer was set at 0.35 mm and the extrusion width of 200% gave a good 0.65 mm wide extruded filament.
6. Heating the material of the bed
There are many materials that can be used as the heating bed, and a suitable hot bed surface will greatly enhance the adhesion of the first layer.
PLA allows a wider range of materials, you can use PET, polyimide tape, or blue masking tape.
ABS need a relatively narrow hot bed material, you can use PET, polyimide tape. Some people in the successful use of hair before printing, it was also the use of ABS slurry (acetone dissolved ABS) with the help of a good adhesion.
In addition the use of solid glue is also a good choice.
7. No need to cool down
Ensure that the fans and cooling mechanism are turned off when printing the first layer.
The above are reference suggestions, the actual printing process may also be due to different types of models and consumables are slightly different, do several attempts to ensure the best print results.