As a result, all layers that are printed after the filament change are shifted by exactly this offset. The 3D printer will not notice the misalignment and will continue to print as if nothing happened. If you accidentally change the XY position of the print head while changing filament, this will directly affect the 3D object. It all depends on how easy it is to move the stepper motors by hand during operation. On some printers, you may experience more layer shifting when changing filament during printing than on others. This problem is highly dependent on the 3D printer you are using. There you can define the temperatures manually. Otherwise, you could use the script for ‘ Pause at Height‘ instead of the filament change script. If this happens to you, you should update your firmware as this should not happen. When this happens, it can quickly cause warping or cause the entire object to detach from the printing plate. However, there have been cases where the temperature has been set to 0☌ for some reason, causing the print bed to cool significantly during the filament change. Normally the print bed temperature should be constant during the script. If the blob happens at the end of the pause, you have to make sure that after the filament change the filament doesn’t come out of the nozzle before the printer starts working again. If the blob happens at the beginning, you should set the value here a little higher so that the filament is retracted further and can’t escape unintentionally. For the beginning of the pause, there is the setting ‘Initial Retraction’ in the script. There are two points in time at which the blob can occur: at the beginning and at the end of the pause. The best way to relieve this pressure is to retract the filament from the nozzle. The main cause of this error is an overpressure in the nozzle that has not been properly relieved. One of the most common errors during filament change is excess material at the transition point. ![]() Newer versions are usually compatible.īlobs, zits and excess material at the transition point: If it is not there, you should update your firmware. If you don’t find it, the printer will just keep printing as if the script wasn’t programmed. If it shows up, it will respond to the script. To check if the firmware of your 3D printer knows the command, you can open the configuration file and search for the M600 command. Then the printer will simply ignore the script and continue printing without stopping. With older 3D printers it is possible that the integrated firmware does not recognize the M600 command of the script. Small test objects that only take a few minutes and a few grams of filament will keep you from ruining a larger print. I would definitely advise you to practice the filament change with small test objects. ![]() Once you have found the right settings for your printer, it may take 1 to 3 test prints. Troubleshooting – Cura Filament ChangeĪlthough the filament change script settings in Cura are quite simple, they can often lead to complications. This gives the suckers under the tentacles a different color than the body. ![]() I have also used the script for many of my projects to achieve certain effects.įor this octopus, I printed the first few layers with a different filament than the rest of the object. With the filament change in Cura, many creative ideas can be implemented. If not, there are several ways to optimize. If you did everything right, the color change or material change should be seamless. Once the script has started and the filament has been retracted from the 3D printer, you can install the new filament and continue printing. ![]() Step 7: Change Filament and Continue Printing With PLA, however, this is usually not a problem. If the 3D printer waits too long for you, the already printed material could cool down too much. However, you should not let the 3D printer out of your sight for too long in order not to miss the filament change. Step 6: Start PrintingĪfter you have sliced the object and sent it to your 3D printer, you can start printing. So that you don’t accidentally use the script again, this hint is clearly visible. Once you have programmed a script, you will see a notice for it in the lower right corner of the Cura interface.Īs with the print settings, scripts are saved when you exit the program and retained when you start it. Now you have to slice the object again to apply the changes. After you have programmed the script, you can close the window.
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