¶ Problem Description
- The filament extruded by the nozzle is very thin.
- Nozzles can be extruded when loading filaments, but there is a virtual shortage of filament between model layers during printing.
- When the software slicing parameters are correct and the filaments are not jammed, the extruder has a clipping sound during the printing process.
¶ Possible Causes
-
The remaining filaments in the nozzle are carbonized under long-term heating, and there is carbon deposition inside the nozzle, which causes the resistance of the nozzle extrusion filaments to increase or partially block the nozzle aperture, and the diameter of the extrusion filament becomes smaller.
-
Metal debris enters the nozzle, which causes the resistance of the nozzle extrusion filament to increase or partially block the nozzle aperture, and the diameter of the extrusion filament becomes smaller.
¶ Solution
¶ Tools Required
- Tool collocation one: two movable wrenches
- Tool collocation two: a movable wrench, a 6.5mm (or slightly larger size such as 7mm) open wrench
- Tool collocation three: vice + movable wrench/vice + 6.5mm (or slightly larger size such as 7mm) open wrench
¶ Procedures
¶ Step 1
- Disassemble the hot end when the machine returns the material and is powered off.
¶ Step 2
- Remove the silicone sleeve above the hot end.
¶ Step 3
- Replace the nozzle
- For the first tool matching scheme, use one of the movable wrenches to clamp the heating block, and the other movable wrench to clamp the nozzle and loosen the nozzle counterclockwise.
- If it is the second tool matching scheme, tighten the heating block with a movable wrench, and tighten the nozzle counterclockwise with an open wrench.
- For the third tool combination, tighten the heating block with a pair of pliers, and tighten the nozzle counterclockwise with a movable wrench/open wrench.
- For the first tool matching scheme, use one of the movable wrenches to clamp the heating block, and the other movable wrench to clamp the nozzle and loosen the nozzle counterclockwise.
¶ Step 4
- After disassembling the old nozzle, tighten the new nozzle clockwise with the same tool (reference torque value 4N.m)