A list of problems with 3D Printer Extruders
As a 3D printing novice, you may encounter various 3D printing kits problems. The most common one is the problem of 3D Printer Extruders. So what are the problems we often encounter? When you encounter these problems again, you can solve them very well.
Question 1: What kind of extrusion state indicates that the distance between the platform and the nozzle is just right?
The ideal situation is that the filaments extruded by the 3D printer should be uniform in thickness and in good contact with each other. If there is a gap between your wires, it means that the platform is too far from the nozzle; if the wires are flattened and the contact between the wires is messy, it means that the platform is too close to the nozzle.
Question 2: What will happen when the extrusion temperature of the 3D printer is too high and too low?
If the temperature of the 3D Printer Extruders is too high, if the temperature is too high, the filament in the nozzle will become very sticky and easily flow out of the nozzle. And if the temperature is too low, the consumables are more difficult to extrude. Under the condition that the retraction distance and retraction speed are determined to be appropriate, if the wire drawing still occurs, you can try to lower the temperature of the extrusion head by 5-10 degrees Celsius. This would be a noticeable improvement.
Question 3: How to solve the excessive extrusion of material during 3D printing?
First, if the temperature of the 3D Printer Extruders is too high, the material will dissolve too much, and the fluidity of the material will increase, causing the 3D Printer Extruders to extrude too much glue at a certain point. If you use CURA 3D printing software, you can try to lower the printing temperature (as shown below). Each time can be adjusted down 5 degrees to test the most suitable printing temperature.
If the printing speed is too slow, the residence time of the nozzle on each point on the printing platform will increase relatively, resulting in more extruded glue at each point. In the CURA 3D printing software, just adjust the printing speed.
Question 4: How to check whether the extrusion volume of the 3D printer is normal?
The most reliable way to detect low extrusion is to 3D print a simple 20mm high cube, sliced with a minimum of 3 edges. Look at the top of the cube to see if the 3 edges fit together very well. If there is a noticeable gap between the 3 edges, then your printer extrusion is low, and if there is no gap at all when the 3 edges meet, then you are likely to have another problem.
Question 5: What controls the extrusion speed of the 3D printer?
The extrusion speed of the 3D printer is controlled by the voltage input to the DC motor of the wire feed mechanism. The DC power supply that controls the DC motor generally has several voltages that can be converted, and the wire feeding speed is fast when the voltage is large. If the wire feeding speed is too small, the wire output will not be full because there is not enough wire material to be fed into the nozzle for extrusion, and the wire output speed will decrease. When the wire feeding speed increases, the wire material is squeezed into the nozzle under the action of a certain force, and the melted wire material is compressed to generate a certain pressure in the cylindrical cavity of the nozzle, and then a strong pressure is generated in the nozzle through the positive rotation of the screw to make the molten wire Extrude at a certain speed. Since a certain pressure is maintained in the cylindrical cavity of the nozzle, the filaments are continuously extruded. When the wire feeding speed increases to a certain value, the extrusion of the screw cannot keep up with the wire feeding speed, the feeding of the wire is blocked, and the fuse will accumulate, causing the plastic hose that guides and transmits the wire to be twisted until the wire is blocked. break.
Question 6: How to increase the extrusion line width of the 3D printer?
Increasing the extrusion line width can result in thicker and stronger infill walls that greatly improves the mechanical strength of the print. Cura does not have an option to directly modify the extrusion line width, but it can be modified indirectly by modifying the “Wall Thickness” option in the “Basic” page.
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