3D Printing Efficiency Calculator
Estimate material waste, expected filament use, print time and overall efficiency for a 3D printing job.
Overview
Use this 3D Printing Efficiency Calculator to estimate how much of your filament becomes the finished model after supports, purge material and likely failed print attempts. It also estimates the total material and time needed to complete a successful job.
How it works
The calculator starts with the material required for one print attempt: model material plus supports and purge material. It then increases this amount based on the expected failure rate to estimate the material needed per completed model. Material efficiency is the finished model's material divided by expected total material use. It applies the same failure adjustment to machine print time, then adds setup and post-processing time to estimate total job time.
How to use this calculator
- 1Enter the filament weight used by the finished model.
- 2Add the estimated weight of supports, rafts, brims and purge material.
- 3Enter a realistic failure rate based on similar prints or your printer history.
- 4Add the slicer's print time for a successful attempt.
- 5Include any setup and post-processing time, then review the efficiency results.
Example Calculation
Model material
80
Support material
15
Purge and priming material
5
Expected print failure rate
10%
Successful print time
8
Setup and post-processing time
0.5
Material efficiency
72.0%
An 80 g model requiring 15 g of supports and 5 g of purge material, with a 10% failure rate, uses about 111.1 g per completed model. Its estimated material efficiency is 72.0%, and total job time is about 9.4 hours.
Frequently asked questions
What is 3D printing material efficiency?
Material efficiency is the percentage of total expected material use that remains in the finished model. Supports, purge material, brims, rafts and failed prints reduce this percentage.
Should I include supports and brims in the material estimate?
Yes. Enter their estimated material weight as support material because they are consumed during printing but are not part of the final model.
How should I choose a print failure rate?
Use your experience with similar prints, materials and printer settings. If you are unsure, try a low, medium and high failure rate to see how sensitive the estimate is.
Does the calculator include electricity costs?
No. It focuses on material and time efficiency. Electricity, labor cost, wear, maintenance and machine depreciation are excluded.
Why is expected material use higher than one slicer estimate?
A slicer estimate usually describes one successful attempt. This calculator adds support and purge use plus an allowance for the material likely consumed by failed attempts.
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Assumptions and warnings
Assumptions
- Material estimates are based on your slicer or measured filament-use figures.
- The stated failure rate is assumed to be consistent across repeated print attempts.
- A failed print is assumed to consume the same average material and machine time as a normal attempt.
- Setup and post-processing time is treated as a one-time amount for each completed model.
- Results are estimates and do not include electricity, machine depreciation or material storage losses.
Warnings
- Actual material use can differ because of extrusion calibration, flow variation, filament moisture, supports and printer-specific purge requirements.
- A failure rate is an estimate; unusual failures or partial print failures can materially change the result.