A bench technician is performing scheduled preventive maintenance and calibration on a Fused Deposition Modeling (FDM) 3D printer that has begun exhibiting poor first-layer adhesion and inconsistent filament extrusion. Which TWO of the following maintenance actions should the technician perform to resolve these issues? (Select TWO.)
- Level the build plate and calibrate the Z-axis offsetAnswer
- Clean the heated print bed surface and clear residue from the extruder nozzleAnswer
- CReplace the liquid resin vat and clean the bottom optical glass window
- DReplace the high-voltage primary charge roller and thermal fuser assembly
Answer
The correct maintenance actions are leveling the build plate while calibrating the Z-axis offset, and cleaning the heated print bed surface while clearing residue from the extruder nozzle.
For Fused Deposition Modeling (FDM) 3D printers, first-layer adhesion issues are primarily caused by an unlevel build plate or incorrect Z-axis offset gap between the nozzle and the bed. Inconsistent extrusion is typically caused by partial nozzle clogs or buildup on the extruder tip. Therefore, leveling the build plate, calibrating Z-axis offset, cleaning the print bed surface, and clearing nozzle residue are the correct maintenance actions.
Step-by-Step Solution
Key Concept
FDM 3D Printer Maintenance and Consumables Troubleshooting