Glossary
Glossary
Stringing
Thin strands of plastic appear between separate parts of the model, especially during travel moves.
Warping
Corners or edges lift from the build plate as the print cools, often ruining dimensional accuracy.
First Layer Not Sticking
The first layer will not bond to the build plate, or the whole print releases during the job.
First Layer Too Thin
The first layer is over-squished, rough, transparent, or scraped by the nozzle.
Under-Extrusion
Printed lines look thin or incomplete, with gaps in walls, sparse top surfaces, or weak layers.
Over-Extrusion
Too much plastic is deposited, causing swollen lines, rough walls, blobs, and poor dimensional accuracy.
Nozzle Clog
Filament stops extruding or comes out weakly even though the extruder is trying to feed.
Layer Shift
Upper layers suddenly shift in X or Y, creating a stepped print.
Layer Separation
Layers split apart or crack along layer lines, leaving the part weak or visibly separated.
Poor Bridging
Plastic sags or droops when printing across open gaps without support.
Nozzle Oozing
Molten filament leaks from the nozzle before printing or during pauses.
Rough Surface
The visible surface looks uneven, scratched, bumpy, or inconsistent.
Top Surface Holes
The top surface has small holes, bumps, or gaps where the infill pattern shows through.
Visible Z Seam
A vertical line of small blobs or marks appears where each layer starts and stops.
Elephant's Foot
The bottom layers spread outward, making the base wider than the rest of the part.
Support Failure
Supports break, detach, or fail to hold up an overhang during printing.
Supports Hard to Remove
Support material is fused to the model or leaves heavy scars when removed.
Infill Showing Through
The infill pattern is visible through outer walls or top surfaces.
Model Deformation
The model bends, melts, sags, or changes shape during or after printing.
Filament Runout or Break
The print stops because the spool runs out, filament breaks, or the extruder can no longer feed material.