Commercial 3D Printing Production Formula
Learn how commercial 3D printing capacity, unit cost, pricing and monthly gross profit are estimated.
This calculator combines productive printer time, build duration, usable build yield and direct production costs to estimate commercial 3D printing output. It helps turn a print-farm schedule into an estimated cost per part and cost-based selling price.
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Monthly Gross Profit
Where:
Estimate how many saleable parts can be made, calculate the cost and price of each part, then multiply the profit per part by the estimated monthly output.
Variables Explained
| Variable | What It Means | Unit |
|---|---|---|
| P - Number of printers | Printers assigned to the production job. | number |
| H - Operating hours per day | Planned daily operating time for each printer. | hours |
| D - Production days per month | Planned working days in the month. | days |
| U - Printer utilization | Share of planned printer time expected to be productive. | percent |
| T - Print time per build | Machine run time for one completed build. | hours |
| Q - Usable parts per build | Saleable parts expected from each completed build. | number |
| C_m - Material cost per part | Material consumption per part, priced at the material cost per kilogram. | currency |
| C_h - Machine hourly cost | Allocated cost for one hour of machine operation. | currency |
| C_l - Labor cost per build | Preparation, unloading, finishing and quality-check labor for one build. | currency |
| M - Target markup | Markup added to estimated unit cost to calculate the suggested price. | percent |
Step-by-Step Calculation
Calculate productive machine-hours
Multiply the printer count, daily hours and monthly days, then reduce the total by the expected utilization rate.
availableMachineHours = P * H * D * (U / 100)
Calculate completed builds
Only complete builds are counted, so the available machine-hours are divided by build time and rounded down.
monthlyBuilds = floor(availableMachineHours / T)
Calculate monthly part capacity
Multiply complete builds by the number of usable parts from each build.
monthlyParts = monthlyBuilds * Q
Calculate unit costs
Machine, material and labor costs are allocated to each usable part.
unitCost = ((T * C_h) / Q) + ((materialPerPart / 1000) * materialCostPerKg) + (C_l / Q)
Calculate suggested selling price
The selected markup is added to the estimated unit cost.
suggestedUnitPrice = unitCost * (1 + M / 100)
Calculate monthly gross profit
Profit per part is multiplied by the estimated number of parts produced and sold.
monthlyGrossProfit = monthlyParts * (suggestedUnitPrice - unitCost)
Example: Four-printer functional-parts production run
Productive machine-hours
4 * 16 * 22 * 0.75
1,056 hours
Completed builds
floor(1,056 / 8)
132 builds
Monthly capacity
132 * 10
1,320 parts
Unit cost
((8 * 6) / 10) + ((120 / 1000) * 30) + (18 / 10)
$10.20 per part
Suggested unit price
10.20 * 1.35
$13.77 per part
Monthly gross profit
1,320 * (13.77 - 10.20)
$4,712.40
Final Result
Estimated capacity is 1,320 parts per month, with an estimated unit cost of $10.20, suggested price of $13.77, and monthly gross profit of $4,712.40.
Assumptions
- ✓The utilization rate already allows for downtime, setup, maintenance, changeovers and unsuccessful builds.
- ✓Every completed build produces the stated number of usable, saleable parts.
- ✓Material use per part includes a reasonable allowance for supports and normal waste.
- ✓Machine hourly cost includes the cost categories you choose to allocate to printer time.
- ✓All estimated monthly output is sold at the suggested price.
Limitations
- !The model does not independently calculate print failures, scrap, reprints or variable yield.
- !It does not include shipping, packaging, sales commissions, payment fees, warranty costs or taxes unless added elsewhere.
- !A markup-based price may differ from a price supported by market demand or customer requirements.
- !Build duration and yield can change with orientation, nesting, material, layer settings and post-processing needs.
Common Mistakes to Avoid
Using scheduled hours as utilization without allowing time for changeovers and printer downtime.
Entering total material used for a build in the material-per-part field.
Counting all printed items rather than only usable, saleable parts per build.
Confusing markup on cost with profit margin on selling price.
Treating gross profit as net profit without adding other operating expenses.
Rounding build capacity up when a partial build does not fit in available machine time.
Related Formulas
Frequently Asked Questions
How do you calculate 3D printer production capacity per month?
Multiply printers, operating hours per day and production days, apply utilization, divide by print hours per build, round down to whole builds, then multiply by usable parts per build.
How is 3D printing cost per part calculated?
The calculator adds machine cost per part, material cost per part and allocated labor cost per part.
Why are completed builds rounded down?
A partial build is not treated as a completed production batch, so the estimate counts only builds that fit fully within productive machine time.
What is the suggested unit price formula?
Suggested unit price equals estimated unit cost multiplied by one plus target markup divided by 100.
Does this formula calculate net profit?
No. It estimates gross profit using the listed production costs. Net profit also depends on unlisted expenses, taxes and financing costs.
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