How much material is wasted on supports?

Supports typically use 10-30% extra material depending on the model geometry. Tree supports in modern slicers use significantly less material than traditional linear supports.

What is a normal failure rate?

A well-tuned printer should have a failure rate under 5%. New users might experience 10-20% until they learn optimal settings. High failure rates usually indicate calibration issues.

Purge lines (skirts, prime lines) are printed at the start of each print to prime the nozzle. They typically use 0.3-0.5g of filament per print. It is small but adds up over many prints.

3DPrintCalcs

Material Waste Calculator — Failed Prints & Supports

Estimate wasted material from failed prints, supports and purge lines.

Filament per Print

Value for filament per print

Support Material

Percentage value

Failure Rate

Speed or rate value

Prints per Month

Value for prints per month

Purge Line Length

Length measurement

Include purge waste

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How We Calculate This

Formula

Support waste = Filament per print x Support percentage
Failure waste = Filament per print x Failure rate
Purge waste = Purge line length x 0.012 g/mm
Total waste = Support + Failure + Purge waste

The purge weight is based on a typical 0.4mm nozzle extruding a 0.2mm layer height purge line.

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Last updated: February 2026

All calculations are estimates. Always verify settings with test prints before committing to final prints.