Why STL file 3D model is stringing in home printing?

Stringing in home 3D printing with STL files usually stems from printer settings or material issues—not the STL file itself (STLs only store 3D geometry data). Common causes include: - Too-high nozzle temperature (makes filament ooze during non-print moves). - Insufficient retraction (filament isn’t pulled back enough between parts). - Wet filament (absorbs moisture, leading to excess oozing). To fix it: Lower nozzle temp by 5–10°C or adjust retraction distance slightly (use your printer’s manual to avoid over-retraction).