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                  1. Support
                  2. Original Prusa MK3.9S
                  3. Printer troubleshooting
                  4. Tangled filament
                   

                  Contents

                  • Winding
                  • How to prevent tangling
                  • How to untangle

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                  Tangled filament

                  Relevant for

                  MK4 family
                  XL family
                  MMU family
                  MINI family
                  MK3 family
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                  2 comments
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                  A tangled filament spool can cause a print to fail, as a knot can form on the filament strand. This is caused by letting the filament end go, for example during a filament unloading, causing the filament end to go under another loop. As a visual example, notice the path of the spool parts indicated with green and magenta arrows, inside of the orange rectangle. 

                  Although a tangled filament can cause a print to fail, the chances are minimized by never leaving the printer unattended while it is switched on, a safety measure valid for our printers, as stated in the bundled 3D Printing Handbook of each of our printers. 

                  Winding

                  The filament in a spool is a single, continuous string wound at once from start to finish. It is physically impossible that, during production, a filament coil can get under another. 

                  Perfect winding refers to the filament sitting nice and tidy on the spool, with no overlaps. It is our way of making Prusament visually pleasing. 

                  Even though a spool does not have perfect winding, this doesn't have an influence on it being prone to tangling. 

                  How to prevent tangling

                  To prevent filament tangling, do not let go of the filament tip whenever the filament is not loaded. Once you are ready to store the spool, put the filament tip on the spaces on the spool, for example on any of the honeycombs for Prusament spools. 

                  How to untangle 

                  Never let go of the filament tip during this procedure, or you'd risk further tangling the filament in different spots. 

                  Identify the knotted strands, and gently untangle the knot from that point, without bending the filament. After that, rewind the loose strands by gently rotating both the spool and the coil. Never let go of the filament end, until this is secured on a hole on the side of the spool. 

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                  2 comments

                  Log in  to post a comment
                  jdipietro
                  •
                  The tangle didn’t happen on the spool like in the picture. It happened as the fillament slid over the sides of the spool.
                  Reply
                  Shuba
                  •
                  Difficult to stay with the printer for a project that takes hours to print. I had this happen about (guessing) 30 minutes into 2 plus hour print. Came to check on the printer after the expected printing duration and found bed had retracted and display said 100% but print was only partly finished so do not know if extruder was pulling hard on the stuck filament all that time. My concern is possible damage to the core one printer although it appears to be printing ok on a later print job. Is there anything to check? It would be nice if the printer could detect a stuck filament feed and stop the extruder from trying to keep pulling on the filament.
                  Reply

                  Topics

                  • Troubleshooting
                    • Printer troubleshooting
                      • Factory reset (MMU2S pre firmware 1.0.6)
                      • Blown Fuse (MK3/MK3S/MK3S+)
                      • Extrusion stopped mid-print (Heat creep)
                      • MMU2S idler unable to move freely
                      • MMU2S Selector not moving
                      • Spaghetti monster
                      • Extruder blob
                      • Clogged nozzle/hotend (MK3.5/S, MK3S+, MK2.5S)
                      • Extruder noises
                      • Filament Not Loading
                      • Misaligned PINDA Sensor (MK2/S)
                      • Print fan is not spinning
                      • Hotend fan is not spinning
                      • Heatbed not heating up properly
                      • P.I.N.D.A./SuperPINDA Sensor testing
                      • SD card not working
                      • LCD screen not working
                      • Printer does not turn on or keeps turning off
                      • Blown Fuse (MK2S/MK2.5/MK2.5S)
                      • Multimeter usage
                      • MK3S keeps prompting filament change
                      • Vibration when printing (MK3S+/MK2.5S)
                      • MMU2S LEDs meaning
                      • Live Z adjust not saving
                      • Factory reset (MK2S/MK2.5S/MK3S)
                      • Firmware updating issues (MK2.5S/MK3S+/MMU2S/MMU3)
                      • IR filament sensor calibration (MMU3, MMU2S)
                      • FINDA setup and troubleshooting
                      • Filament jam (MMU2S)
                      • Nozzle crashed into the heatbed
                      • Clogged nozzle/hotend (MINI/MINI+)
                      • External SPI flash W25X20CL/xFLASH not responding - error
                      • IR Filament Sensor Troubleshooting (MK2.5S, MK3S)
                      • Preheat error bed #12201 (MINI)
                      • M.I.N.D.A./SuperPINDA sensor testing (MINI/MINI+)
                      • Preheat error print head #12202 (MINI)
                      • Thermal runaway bed #12203 (MINI)
                      • Thermal runaway print head #12204 (MINI)
                      • Maxtemp error bed #12205 (MINI)
                      • Maxtemp error print head #12206 (MINI)
                      • Mintemp error bed #12207 (MINI)
                      • Mintemp error print head #12208 (MINI)
                      • Squaring your MINI
                      • Failing Z calibration (MK3S/MK2.5S)
                      • Ambient temperature check (MK3/MK3S)
                      • Factory reset (MINI)
                      • Blown Fuse (MINI)
                      • IR Filament Sensor Troubleshooting (MINI/MINI+)
                      • Filament failed to unload (MINI/MINI+)
                      • Temp not matching print head #12210 (MINI/MINI+)
                      • PrusaLink Troubleshooting
                      • Logging data over serial line (MMU2S)
                      • Homing Error #12301 (MINI)
                      • USB not connected #12602 (MINI/MINI+)
                      • No file on USB #12604 (MINI/MINI+)
                      • Signature verification failed #12606 (MINI/MINI+)
                      • Hash verification failed #12607 (MINI/MINI+)
                      • Unsupported printer type #12610 (MINI/MINI+)
                      • Unsupported printer version #12611 (MINI/MINI+)
                      • Flash erase error #12605 (MINI/MINI+)
                      • Temp not matching heatbed #12209 (MINI/MINI+)
                      • Homing error Z #17301 (XL)
                      • Modular bed error #17501 (XL)
                      • Dwarf error #17502 (XL)
                      • FINDA: Filament Stuck #04102 (MMU)
                      • Nozzle Cleaning Failed #17834 (XL)
                      • Extruder preheat error #17202 (XL)
                      • Extruder thermal runaway #17204 (XL)
                      • Extruder Mintemp error #17208 (XL)
                      • Extruder Maxtemp error #17206 (XL)
                      • No FW in internal flash #12612 (MINI/MINI+)
                      • Invalid FW size on USB #12603 (MINI/MINI+)
                      • File system error #12613 (MINI/MINI+)
                      • Unsupported BBF version #12614 (MINI/MINI+)
                      • Puppy error #17514 (XL)
                      • No FW on USB flash drive #17604 (XL)
                      • Unsupported printer model #17610 (XL)
                      • Unsupported Buddy FW #17611 (XL)
                      • USB flash error #17613 (XL)
                      • Invalid FW size on USB flash drive #17603 (XL)
                      • USB flash drive not connected #17602 (XL)
                      • Firmware missing #17612 (XL)
                      • FW in internal flash corrupted #17608 (XL)
                      • Hash verification failed #17607 (XL)
                      • Imposter! Fake signature #17606 (XL)
                      • Flash erase error #17605 (XL)
                      • Unsupported firmware BBF file #17614 (XL)
                      • Modular bed error #17250 (XL)
                      • Toolchanger error #17135 (XL) #36135 (CORE One INDX)
                      • Extruder temp not matching #17210 (XL)
                      • Modular bed error #17251 (XL)
                      • Modular bed error #17252 (XL)
                      • Modular bed error #17253 (XL)
                      • Modular bed error #17254 (XL)
                      • Modular bed error #17256 (XL)
                      • Modular bed error #17257 (XL)
                      • Modular bed error #17302 (XL)
                      • Modular bed error #17303 (XL)
                      • Dwarf error #17503 (XL)
                      • ESP error #17505 (XL)
                      • ESP error #17506 (XL)
                      • ESP error #17504 (XL)
                      • Emergency stop #17510 (XL)
                      • Puppy error #17511 (XL)
                      • Puppy error #17512 (XL)
                      • Puppy error #17513 (XL)
                      • Puppy error #17515 (XL)
                      • Puppy error #17516 (XL)
                      • Puppy error #17517 (XL)
                      • Puppy error #17518 (XL)
                      • Puppy error #17519 (XL)
                      • Puppy error #17520 (XL)
                      • Puppy error #17521 (XL)
                      • Puppy error #17522 (XL)
                      • Hotend preheat error #31202 (CORE One) #35202 (CORE One L) #26202 (MK4S) #13202 (MK4) #27202 (MK3.9S) #21202 (MK3.9) 
                      • Bed thermal runaway #31203 (CORE One) #35203 (CORE One L) #36203 (CORE One INDX) #26203 (MK4S) #13203 (MK4) #27203 (MK3.9S) #21203 (MK3.9) #28203 (MK3.5S) #23203 (MK3.5) 
                      • Hotend thermal runaway #31204 (CORE One) #35204 (CORE One L) #26204 (MK4S) #13204 (MK4) #27204 (MK3.9S) #21204 (MK3.9)
                      • Hotend mintemp error #31208 (CORE One) #35208 (CORE One L) #26208 (MK4S) #13208 (MK4) #27208 (MK3.9S) #21208 (MK3.9)
                      • Bed mintemp error #31207 (CORE One) #35207 (CORE One L) #36207 (CORE One INDX) #26207 (MK4S) #13207 (MK4) #27207 (MK3.9S) #21207 (MK3.9) #28207 (MK3.5S) #23207 (MK3.5)
                      • Bed maxtemp error #31205 (CORE One) #35205 (CORE One L) #36205 (CORE One INDX) #26205 (MK4S) #13205 (MK4) #27201 (MK3.9S) #21201 (MK3.9) #28201 (MK3.5S) #23201 (MK3.5)
                      • Selftest failed (XL single-tool)
                      • Filament not loading (XL)
                      • Clogged hotend (XL)
                      • Heatbreak Mintemp error #17211 (XL)
                      • Heatbreak Maxtemp error #17212 (XL)
                      • Homing error X #17304 (XL)
                      • Homing error Y #31305 (CORE One) #35305 (CORE One L) #36305 (CORE One INDX) #17305 (XL)
                      • USB Port Overcurrent #17306 (XL)
                      • USB Device Overcurrent #17307 (XL)
                      • I2C Send Failed #17311 (XL)
                      • I2C Send Busy #17312 (XL)
                      • I2C Send Timeout #17313 (XL)
                      • I2C Send Undefined #17314 (XL)
                      • I2C Receive failed #17315 (XL)
                      • EEPROM I2C Receive Busy #17316 (XL)
                      • I2C Receive Timeout #17317 (XL)
                      • I2C Receive undefined #17318 (XL)
                      • Modular Bed Error #17319 (XL)
                      • Out of memory #17507 (XL)
                      • PNG Buffer Full #17508 (XL)
                      • Loadcell not calibrated #17523 (XL)
                      • Loadcell tare error #17524 (XL)
                      • Loadcell tare failed #17525 (XL)
                      • Loadcell measure failed #17526 (XL)
                      • Loadcell Bad Configuration #17527 (XL)
                      • Loadcell timeout #17528 (XL)
                      • LED Memory Error #17529 (XL)
                      • Marlin Request Timeout #17530 (XL)
                      • BBF Allocation Failed #17531 (XL)
                      • BBF Initialization failed #17532 (XL)
                      • Loadcell Not Calibrated #31523 (CORE One) #35223 (CORE One L) #26523 (MK4S) #13523 (MK4) #27523 (MK3.9S) #21523 (MK3.9)
                      • Loadcell Measure Failed #31526 (CORE One) #35526 (CORE One L) #36526 (CORE One INDX) #26526 (MK4S) #13526 (MK4) #27526 (MK3.9S) #21526 (MK3.9) #36526 (CORE One INDX)
                      • Loadcell Bad Configuration #31527 (CORE One) #35527 (CORE One L) #36527 (CORE One INDX) #26527 (MK4S) #13527 (MK4) #27527 (MK3.9S) #21527 (MK3.9)
                      • Loadcell Timeout #31528 (CORE One) #35528 (CORE One L) #26528 (MK4S) #36528 (CORE One INDX) #13528 (MK4) #27528 (MK3.9S) #21528 (MK3.9)
                      • Heatbreak MINTEMP Error #31211 (CORE One) #35211 (CORE One L) #26211 (MK4S) #13211 (MK4) #27211 (MK3.9S) #21211 (MK3.9)
                      • Modular Bed Error #17320 (XL)
                      • Blown Fuse (MK4/S, MK3.9/S)
                      • Filament not loading (MK4/S, MK3.9/S)
                      • Homing error Y #26305 (MK4S) #13305 (MK4) #21305 (MK3.9) #23305 (MK3.5)
                      • Tangled filament
                      • Factory reset (CORE One L, CORE One, MK4/S, MK3.9/S, MK3.5/S, MINI/+, XL)
                      • Emergency stop #12510 (MINI)
                      • Nextruder filament sensor (CORE One, CORE One L, MK4/S, MK3.9/S, XL/+)
                      • XY probe unstable #17105 (XL)
                      • XY position invalid #17106 (XL)
                      • Pin not reached #17107 (XL)
                      • Dock position out of bounds #17103 (XL)
                      • Tool offset out of bounds #17104 (XL)
                      • ESP not connected #17533 (XL)
                      • Status LED explained (MMU3)
                      • Factory Reset (MMU)
                      • Connect Registration Failed
                      • Hotend maxtemp error #23206 (MK3.5)
                      • Connect Registration Failed #12401 (MINI)
                      • Connect Registration Failed #21401 (MK3.9)
                      • Connect Registration Failed #23401 (MK3.5)
                      • Connect Registration Failed #17401 (XL)
                      • Homing Error Z #23301 (MK3.5)
                      • Nozzle Heater Overcurrent #23308 (MK3.5)
                      • TMC driver shorted #04304 (MMU)
                      • TMC driver shorted #04314 (MMU)
                      • TMC driver shorted #04324 (MMU)
                      • Selftest failed (XL multi-tool)
                      • Blue Screen of Death (BSOD) #31538 (CORE One) #35538 (CORE One L) #36538 (CORE One INDX) #26538 (MK4S) #13538 (MK4) #27538 (MK3.9S) #17538 (XL) #21538 (MK3.9) #28538 (MK3.5S) #23538 (MK3.5) #12538 (MINI)
                      • Stuck filament detection #31101 (CORE One) #35101 (CORE One L) #26101 (MK4S) #13101 (MK4) #27101 (MK3.9S) #21101 (MK3.9) #17108 (XL)
                      • Hotend temp not matching #31210 (CORE One) #35210 (CORE One L) #26210 (MK4S) #13210 (MK4) #27210 (MK3.9S) #21210 (MK3.9)
                      • Hotend Heater Overcurrent #17322
                      • Heatbed temp not matching #17209 (XL)
                      • Homing error Y #12305 (MINI/MINI+)
                      • Homing error X #12304 (MINI/MINI+)
                      • Toolchanger problem #17813 (XL multi-tool)
                      • Under-extrusion (Nextruder printers)
                      • EXTRUDER ERROR #17536 (XL)
                      • Filament sensor stuck #31113 (CORE One) #35113 (CORE One L) #36113 (CORE One INDX) #17113 (XL) #26113 (MK4S) #13113 (MK4) #27113 (MK3.9S) #21113 (MK3.9) #28113 (MK3.5S) #23113 (MK3.5) #12113 (MINI/+)
                      • Homing error X #31304 (CORE One) #35304 (CORE One L) #36304 (CORE One INDX) #17304 (XL)
                      • Fil. sensor troubleshooting #31114 (CORE One) #26114 (MK4S) #13114 (MK4) #27114 (MK3.9S) #21114 (MK3.9) #28114 (MK3.5S) #23114 (MK3.5)
                      • Crash recovery repeated crash #31811 (CORE One) #35811 (CORE One L) #26811 (MK4S) #13811 (MK4) #27811 (MK3.9S) #21811 (MK3.9) #28811 (MK3.5S) #23811 (MK3.5) #17811 (XL) #12811 (MINI)
                      • Troubleshooting the MINI/MINI+ assembly
                      • Service menu - Factory Reset
                      • General troubleshooting MMU1
                      • Service menu - Individual Filament Calibration
                      • Clogged nozzle (CORE One, CORE One L, XL, MK4/S, MK3.9/S)
                      • Multi Material Post Processor Troubleshooting
                      • Firmware in the internal flash corrupted! #12608 (MINI)
                      • Multiplexer
                      • Filament pulleys MMU1
                      • Unable to unload filament MMU1
                      • SD cards and USB drives
                    • Diagnostics
                    • Print Quality Troubleshooting
                    • QR Error codes
                    • Print Error Messages