{"id":162060,"date":"2020-12-01T08:47:55","date_gmt":"2020-12-01T08:47:55","guid":{"rendered":"http:\/\/facfox.com\/docs\/?post_type=kb&p=162060"},"modified":"2020-12-02T01:56:32","modified_gmt":"2020-12-02T01:56:32","slug":"how-to-prevent-filaments-from-grinding","status":"publish","type":"kb","link":"https:\/\/facfox.com\/docs\/kb\/how-to-prevent-filaments-from-grinding","title":{"rendered":"How To Deal With Filament Grinding in 3D Printing?"},"content":{"rendered":"
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Most 3D printers use a small drive gear that grabs the filament and sandwiches it against another bearing. The drive gear has sharp teeth that allow it to bite into the filament and push it forward or backward, depending on which direction the drive gear spins. If the filament is unable to move, yet the drive gear keeps spinning, it can grind away enough plastic from the filament so that there is nothing left for the gear teeth to grab on to. Many people refer to this situation as the filament being \u201cstripped,\u201d because too much plastic has been stripped away for the extruder to function correctly. If this is happening on your printer, you will typically see lots of small plastic shavings from the plastic that has been ground away. You may also notice that the extruder motor is spinning, but the filament is not being pulled into the extruder body. We will explain the easiest way to resolve this issue below.<\/p>\n

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Common Solutions<\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Aggressive Retraction Settings<\/h3>\n<\/div>\n<\/div>\n
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One of the first things you will want to check is the retraction settings for your extruder. If the retraction speed is too fast, or you are trying to retract far too much filament, it may put excessive stress on your extruder and the filament will struggle to keep up. As an easy test, you can try reducing your retraction speed by 50% to see if the problem goes away. If so, you know that your retraction settings may be part of the problem.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Increase the extruder temperature<\/h3>\n<\/div>\n<\/div>\n
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If you continue to encounter filament grinding, try to increase the extruder temperature by 5-10 degrees so that the plastic flows easier. You can do this by clicking \u201cEdit Process Settings\u201d and selecting the Temperature tab. Select your extruder from the list on the left and then double-click on the temperature setpoint you wish to change. Plastic will always flow easier at a higher temperature, so this can be a very helpful setting to adjust.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Printing too fast<\/h3>\n<\/div>\n<\/div>\n
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If you continue to encounter filament grinding, even after increasing the temperature, then the next thing you should do is decrease the printing speed. By doing this, the extruder motor will not need to spin as fast, since the filament is extruded over a longer period of time. The slower rotation of the extruder motor can help avoid grinding issues. You can adjust this setting by clicking \u201cEdit Process Settings\u201d and selecting the Speeds tab. Adjust the \u201cDefault Printing Speed,\u201d which controls the speed of any movements where the extruder is actively extruding plastic. For example, if you were previously printing at 3600 mm\/min (60 mm\/s), try decreasing that value by 50% to see if the filament grinding goes away.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Check for a nozzle clog<\/h3>\n<\/div>\n<\/div>\n
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If you are still encountering filament grinding after increasing the temperature and slowing down the print speed, then it\u2019s likely your nozzle is partially clogged. Please read the Clogged Extruder<\/a> section for instructions on how to troubleshoot this issue.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Most 3D printers use a small drive gear that grabs the filament and sandwiches it against another bearing. The drive gear has sharp teeth that allow it to bite into the filament and push it forward or backward, depending on which direction the drive gear spins. If the filament is unable to move, yet the […]<\/p>\n","protected":false},"author":4,"featured_media":162061,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"kbtopic":[137],"kbtag":[130,126,388,203],"class_list":["post-162060","kb","type-kb","status-publish","has-post-thumbnail","hentry","kbtopic-case","kbtag-3d-printer","kbtag-3d-printing","kbtag-problem","kbtag-solution"],"yoast_head":"\nHow To Deal With Filament Grinding in 3D Printing? - FacFox Docs<\/title>\n<meta name=\"description\" content=\"Most 3D printers use a small drive gear that grabs the filament and sandwiches it against another bearing. 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