Common Rail Nozzle Issues
Common Rail Nozzle Issues
To put it simply, a common rail nozzle is a type of printer nozzle that has a large port in the center. It is connected to a particular part of the print head by a large plastic tube and a small and well-known plastic tube. The nozzle creates the "wet" portion of the print by spraying liquid into the material being printed, thereby curing the print head's jet.
This sort of common nozzle is usually installed inside a generic print head called a barrel and is often very smooth and straight. Because it uses the head's port to shoot the spray into the material, the nozzle is very thin and very light, and so much like to be mounted close to the print head's jet. This is also why most common rail nozzles have a pretty tiny port in the center, which helps keep the nozzle very close to the print head.
It is very important to note that a printer's barrel must fit snugly around the print head, or else the print head will not come out of the nozzle. Some high-end printers do not have this requirement; in these cases, the barrel is just there for looks. However, some generic PLA printers use this method, and others do as well. If your printer uses a different type of barrel, you will probably need to do some fitting yourself.
Although this is often the case, there are some instances where a common rail nozzle can cause problems. For example, the plastic tube can actually shift around, creating little creases that are not only difficult to clean, but are also potentially harmful to the printer's plastic. Another issue that is often visible is that the plastic tube might be much wider than the nozzle, which is perfectly normal, and can increase the amount of "spillage" that gets behind the nozzle - which means more water gets everywhere.
In general, a common rail nozzle tends to create a very clean print. However, when this happens, you should pay close attention to make sure you clean up any "spillage" as soon as possible, because the sooner you get it cleaned up, the less likely it is that the print will get as dirty. Also, because of the way that it connects to the print head, and the fact that the plastic tube can move around a lot, you need to be careful when you clean the print head with a cloth or a brush, because cleaning out the nozzle port from the print head could result in very undesirable results, such as the nozzle being pushed into the center of the print head.
One more point about the nozzle and the print head is that if you are not getting the effect you want out of your print, then there may be a problem with the material itself. Sometimes the plastic will get so soft that the nozzle can't get a good grip on it. However, if you find that you're only getting smooth surfaces, it may be that the material is too hard.
Finally, another issue with the common rail nozzle is that it can help reduce the quality of the print, especially at the cost of overall printing speed. Because the nozzle runs against the print head as opposed to going through it, it also helps remove any tiny air bubbles in the print head, but it does increase the amount of travel that goes into the head. When this happens, the print head has to move a lot farther, which creates a very long journey for the print head to go through.
The end result is that a common rail nozzle can help a print head work faster, but it can also hurt the print quality. Therefore, if you are using the nozzle for maximum printing speed, it is very important to pay close attention to all the issues described above, and make sure that you follow your nozzle's instructions carefully.
0users like this.