material: PLA

geometry_type: adhesion

lesson: Print detachment detected when layer-to-layer NRMSE score > 1.0 AND 5-layer deviance > 1.0. Large structural changes across consecutive layers indicate the part has separated from the bed. Check bed adhesion: clean surface, raise bed temp, use brim or raft.

source: ingested


geometry_type: stringing

lesson: Filament runout or nozzle clog detected when NRMSE score < 0.2 AND deviance < 0.2. Near-zero structural change means no material is being deposited. Check filament spool, extruder tension, and nozzle for clogs.


geometry_type: overhang

lesson: Partial breakage detected when frame-to-frame score delta > 0.2 AND deviance delta > 0.2. Sudden structural changes mid-print indicate layer delamination or part fracture. Reduce cooling fan, increase nozzle temp, check for drafts.