Users who have used FDM 3D printers may encounter such a problem. The initialization of the machine is normal, the heating plate and the nozzle heating are no problem, but the material cannot be fed, the feeder roller has a clattering slip, and the silk material. There are also obvious traces of gear pressing on it, which indicates that the nozzle of the 3D printer is blocked. But more often, the machine is only slightly clogged, but it will also cause dotted lines and faults in the printed items.
The nozzle clogging, as the most basic problem of 3D printers, is usually caused by two weeks: one reason is that the quality of the consumable itself is not good enough, the fluidity of the material is not strong, there are impurities, bubbles, etc., which cause the wire to be unable to melt uniformly. The inside of the nozzle cannot be extruded well. Especially for PLA consumables, since the material is directly converted from solid to liquid after heating, it is more likely to block the nozzle. Usually use regular good consumables such as creative ABS, PLA consumables, this situation can be avoided.
Another reason for nozzle clogging is improper operation and maintenance of the 3D printer. Irregular operations (pulling, cutting) when replacing printing consumables result in residual wire breakage from the feeding gear or feeding tube to the nozzle. , Can’t squeeze normally, and block the nozzle. Generally, the longer the 3D printer is used, the more likely it is that the nozzle is clogged, because too much residual material is attached to the nozzle and the qualitative change occurs on it.
There are usually two ways to deal with nozzle clogging. One is to use an alcohol lamp to heat the residual material in the nozzle, and then poke out the melted/ashed residual material; the other is to dissolve the residual material in the nozzle with acetone solution Come out, there are also two methods used together.
After removing the nozzle from the 3D printer, heat it with an alcohol lamp for 5-10 minutes to fully burn/melt the remaining material in the nozzle, and then use a steel needle to poke the ash and liquid out of the nozzle, and then Soak the nozzle in the acetone solution for about 2 hours, and the remaining parts that are not easy to burn/melt can be completely removed.
Recommended reading《Getting started with 3D printer basics》