Filament waste in 3D printing often comes from everyday habits rather than dramatic failures. Key culprits include using excessive infill (15-20% is usually sufficient for non-structural parts), defaulting to supports without reconsidering model orientation or design, and reprinting failed jobs without diagnosing the root cause first. Choosing better-designed models and spending a few minutes tuning slicer settings can save significant material and time.
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Printing way more infill than neededUsing supports like a defaultReprinting instead of tuning firstSort: