Possible cause
You run out of filament
Your printhead is too close to the print bed
Nozzle blockage
Solution
Just change your spool of filament
Change your Z-offset / redo bed leveling
Try to use a nozzle cleaner needle when the nozzle is at printing temperature, push the filament into the extruder to see if the blocked filament ozz out.
If all fail, you may need to dismantle the nozzle and see if you can remove the blockage.
(O’Connell, 2023)
Possible cause
Unstable surface and vibration
Terrible bed leveling
loose belt and wheels
Voltage too low on step motor (torque reduced and hence unsmooth motion)
Print speed faster than the step motor can handle
Collosion with the printer during print
Possible solutions
put your printer on a stable surface
Just redo the bed leveling
You may want to check if the belts and wheels are loosen
Check your 3D printer setting
Slow it down, cowboy
You may want to change the design of the print.
(Hay, 2023)
Possible cause
over extrusion (your nozzle is too close to the print bed)
Printing temperature is too high
Print too large
Possible solution
Redo the bed leveling
Lower printing temperature
add chamfers to your print
(Support Community, n.d.)
Possible cause
Unleveled bed
Printing temperature is too high
Dirty print bed
Printing material vulnerable to warping (Nylon, PETG)
Possible Solution
Redo the bed leveling
Lower printing temperature
Clean your print bed
Use enclosure
Cold pull referce to the method for cleaning up clogged nozzles with filaments. Nozzle will be heated to operating temp and intentionally squeeze through the nozzle. The filament is idle for cool down and then pulled away from the nozzlel, in an attempt to remove any possible debris inside the nozzle.
A successful clean up of the nozzle using this technique can save you a lots of time disassembly the whole hot end and reduce damage to your print.
(Alexander Issal, 2024)
Common signs of under extrusion include gaps, missing layers, insufficiently small layers and dots / holes which exist in a print. these signs indicate a condition when insufficient filament is extruded during a print, and may require attenion on the extruder itself.
Improper settings and calibation can be a potential cause, defective hardware and uneven diameter of filaments can also contribute to under extrusion.
You can troubleshoot by checking if there are any knots on the spool of the filament, Remove those knots may have resolve this issue. Also, check to see if there are any clogged nozzle and if there are any wear on the extrude gear. If the issue still presist, it is better to contact the manufactor for further information and repair.
(Tobias hullette, 2023)