Cura includes settings to determine how much plastic the 3D printer extrudes. Then the 3D printer didn't give much feedback that the plastic had actually flowed out of the nozzle. Therefore, it is possible to actually extrude less plastic than expected by the software (i.e. under extrusion). If this happens, you may notice that there are gaps between adjacent layers. The way to test whether your printer can squeeze enough is to print a simple 20 mm cube and set at least 3 layers of edges. Check to see if the three edges at the top of the square are tightly glued together. If there is a gap between the three lines, then you are experiencing the problem of insufficient discharge. If the three sidelines are close to each other and there is no gap, you may encounter another problem.

The nozzle of the machine is 0.4, sometimes you may think it takes a long time to print, and sometimes the customer may not need too high precision, what they need is the appearance of a model, so sometimes they will replace a nozzle with a large aperture, but they will forget to change the size of the nozzle on the chip, resulting in less actual discharge than calculated discharge, There is a gap in the middle. At this time, the actual diameter of the nozzle can be changed.

If your aperture diameter is correct, but you still see the problem of insufficient discharge, then you need to adjust the extrusion ratio. This is a very useful setting in Cura that allows you to easily modify the amount of extruder extrusion (also known as flow rate). There is a printing material in the basic print, and there is an extrusion amount setting (%). The default extrusion rate is 100. If there is insufficient extrusion in the model print, you can increase the extrusion rate appropriately to make up for it. In the printing process, it can also be set in the adjustment. There is a flow setting in the adjustment, which is also the setting of extrusion rate.