3D Printing Waste Calculator Examples
Worked examples showing how supports, setup material, failure rates and filament price affect 3D printing waste.
These examples show how the calculator estimates filament requirements for different print runs. They use model weight excluding supports and setup material, then add planned waste and expected replacement-print material.
Single prototype with no supports
A maker needs one 60 g prototype. The model prints without supports, uses a 3 g brim, and has an expected 5% failure rate.
Input Summary
Model weight
60 g
Successful copies
1
Support material
0%
Setup waste per print
3 g
Expected failure rate
5%
Filament cost
$20.00/kg
Calculation Breakdown
- 1Successful-print material(60 g × 1) + (60 g × 0%) + (3 g × 1)63 g
- 2Expected failed-print material63 g × 5 / 953.3 g
- 3Total filament required63 g + 3.3 g66.3 g
- 4Waste and cost3 g + 3.3 g = 6.3 g; (6.3 / 1000) × $206.3 g and $0.13
Result Summary
Total filament required
66.3 g
3D Printing Waste Calculator
The print run requires about 66.3 g of filament, of which 6.3 g or 9.5% is expected waste.
Five supported functional parts
A workshop needs five usable 100 g parts. Supports are estimated at 15%, setup waste is 5 g per print, and the expected failure rate is 10%.
Input Summary
Model weight
100 g
Successful copies
5
Support material
15%
Setup waste per print
5 g
Expected failure rate
10%
Filament cost
$25.00/kg
Calculation Breakdown
- 1Finished model material100 g × 5500 g
- 2Planned support and setup waste(500 g × 15%) + (5 g × 5)100 g
- 3Material for successful prints500 g + 100 g600 g
- 4Total, waste and cost600 g / 0.90 = 666.7 g; waste = 166.7 g; (166.7 / 1000) × $25666.7 g, 166.7 g and $4.17
Result Summary
Total, waste and cost
666.7 g, 166.7 g and $4.17
3D Printing Waste Calculator
Plan for 666.7 g of filament. Estimated waste is 166.7 g, equal to 25.0% of total filament.
Twenty-part production batch with reliable printing
A small business needs twenty 250 g enclosures. Supports add 8%, setup waste is 7 g per print, and process tuning has reduced expected failures to 3%.
Input Summary
Model weight
250 g
Successful copies
20
Support material
8%
Setup waste per print
7 g
Expected failure rate
3%
Filament cost
$30.00/kg
Calculation Breakdown
- 1Finished model material250 g × 205,000 g
- 2Support and setup waste(5,000 g × 8%) + (7 g × 20)540 g
- 3Material for successful prints5,000 g + 540 g5,540 g
- 4Total, waste and cost5,540 g / 0.97 = 5,711.3 g; waste = 711.3 g; (711.3 / 1000) × $305,711.3 g, 711.3 g and $21.34
Result Summary
Total, waste and cost
5,711.3 g, 711.3 g and $21.34
3D Printing Waste Calculator
The batch needs about 5.71 kg of filament, with about 711.3 g expected waste at a material value of $21.34.
Multicolor print run with high purge waste
Ten decorative 40 g models need supports and frequent color changes. Supports are 25%, purge and setup waste is 18 g per print, and the expected failure rate is 15%.
Input Summary
Model weight
40 g
Successful copies
10
Support material
25%
Setup waste per print
18 g
Expected failure rate
15%
Filament cost
$70.00/kg
Calculation Breakdown
- 1Finished model material40 g × 10400 g
- 2Support and setup waste(400 g × 25%) + (18 g × 10)280 g
- 3Material for successful prints400 g + 280 g680 g
- 4Total, waste and cost680 g / 0.85 = 800 g; waste = 400 g; (400 / 1000) × $70800 g, 400 g and $28.00
Result Summary
Total, waste and cost
800 g, 400 g and $28.00
3D Printing Waste Calculator
The run requires about 800 g of filament, and 400 g or 50.0% is expected to become waste.
How to Read Your Results
Total filament required is the planning quantity for achieving the requested number of usable copies, not just the model weight.
Estimated waste includes supports, planned setup material and expected material consumed by failed attempts.
Waste percentage compares all expected waste with total required filament.
Waste cost values discarded or failed-print material using the entered price per kilogram.
Use the result to plan spool capacity, but leave an additional practical buffer for unplanned tests or interruptions.
Assumptions & Important Notes
- Each successful copy uses the same model weight, support percentage and setup waste.
- Expected failed attempts consume the same average material as the successful-print estimate.
- Filament price is constant for all material used in the run.
- The examples exclude electricity, labor, printer depreciation and post-processing costs.
Related Examples
Frequently Asked Questions
Can I use these examples for resin printing?
The structure can illustrate planning, but the inputs and costs are designed for filament printing. Resin workflows have different support, cleaning and disposal considerations.
Why does the multicolor example have a high waste rate?
It combines support material, large per-print purge waste and a 15% expected failure rate. All three are treated as material not retained in finished models.
Should I round the total filament result up?
For purchase planning, rounding up to a practical spool amount can help account for variation and material already loaded on the printer.
What happens if the failure rate is zero?
No additional failed-print material is added. Waste then consists only of supports and setup material.
Can setup waste be different for each model?
Yes, but this calculator uses one average per-print value. Use a representative average or calculate separate groups when waste differs substantially.
Ready to calculate your own result?
Use the live calculator with your own inputs, timing, and preferences.