FDM Printing fails

• Incomplete Print:
  • The print does not adhere to the bed. Always scrutinize the first layer, as it is often the root cause. In addition to the first layer under extrusion possibilities:
    • Contact surface area is too small.
    • Material lacks proper adhesion to the bed.
    • Nozzle is positioned too high above the bed.
    • Insufficient support.

• Interrupted Extrusion (Extrusion Stopped Completely, Missing Layers, or Resulting in Spaghetti):
  • Out of filament.
  • Knot in the filament on the roll.
  • Stripped filament (refer to the section above).
  • Clogged nozzle.
  • Heat creep, where the filament softens prematurely, increases in diameter, and jams before reaching the nozzle. Resolving this extends beyond this document's scope and may necessitate printer maintenance or a redesign.
  • TPU:
    • Excessive resistance in the feed system (such as sticking to the wall of a Bowden tube).
    • Filament escapes control after the drive.
  • Filament transport stops (refer to the section above).