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What to do if your filament breaks during a print? Simple steps to take to get you printing again.

Date:2016-10-13 Hits:363
What to do if your filament breaks during a print? Simple steps to take to get you printing again.

People always want to know if there is a solution as to how to fix broken filament once your machine begins printing. When the filament suddenly brakes during printing the machine cant continue printing completely without material supplied to it.When FDM 3d printer starts working, materials need to be heated and melted, and then extruded from the nozzle. The melting point of different materials is not the same, and heating temperature of 3d printer nozzle is various from machine itself. So to choose a suitable 3d printer filament depends greatly on performance of machine.

So what causes filament breakage while printing? 

(1) Stop the 3D Printer
The first thing that must be done is to stop the machine from printing. Then, to insert new filament from the spool into the 3D printer's extruder.
First, Stop the 3D Printer from printing by hitting the [STOP / PAUSE] button on the LCD Panel, if you dont have an LCD Display, Make a note of the Z-Height and turn off the printer.

(2) Extract the old Filament If there is material inside the extruder and/or nozzle you will need to remove the old filament by reversing the direction of the extruder. On the MINGDA LCD [HOME] screen, push the [SETUP] button (Twice) to enter the setup mode. Push the [XYZE Move Control] button (the one with 4 arrows in the upper left corner). Then [press 10[] steps button] now press the button with a Z with an arrow pointing upcontinuously until the filament has been removed. 
If the filament has broken and is below the extruder to extract it, you will need to turn on the hotend and and wait for the temperature to get above 190c. Once the hot end is hot enough to melt the plastic filament, Use a skinny wire <= 2mm like a long 12awg wire or a LARGE 2mm Allen Wrench to push the filament down; forcing it out through the nozzle. 

(3) Reloading new filament
After removing the broken filament from the extruder it is time to reload new filament into the machine and prime it for printing.
Ensure you have a clean cut on the filament spool then take about 5’’ of filament and straighten it with your fingers. Press down and hold the spring tensioner on the extruder, then proceed to reload the filament as before.

(4) Priming the nozzle
Once the new filament has been loaded into the extruder and is going down, it is a good idea to extrude some filament to see the flow of filament through the nozzle and to ensure that everything is working fine. When you are satisfied with the way the extruder is working, return to your model and input the Z-Height (from earlier) into the slicing software to begin printing at the height when the filament broke.