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3D Printer: Buy vs Outsource Calculator

Compare buying a 3D printer with outsourcing prints, including hardware, setup, filament, electricity, design fees, shipping, and the calculator's approximate break-even quantity.

Published

Cheaper option
Outsourcing is cheaper by
$17.16
Total buying cost
$332.16
Total outsourcing cost
$315.00
Cost difference
$17.16
Filament needed
1.24 kg
Filament cost
$29.76
Total electrical cost
$2.40
Approximate break-even quantity
27

25 models at 40 cm³ each are compared against a $12.00 per-model service price.

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3D Printer: Buy vs Outsource Calculator

The 3D Printer: Buy vs Outsource Calculator compares the cost of owning a printer with the cost of paying a service bureau for the same prints. It is designed for makers, labs, schools, engineering teams, product designers, and small businesses that need a practical answer before buying equipment. The calculator combines printer price, setup accessories, filament, material density, model volume, print quantity, electricity, print time, design or software costs, outsourcing price, shipping, and outside design fees.

This is not a generic equipment-purchase page. The model separates one-time buying costs from per-model buying and outsourcing costs. Buying cost is a one-time hardware and setup total plus variable material and electricity. Outsourcing cost is a service quote per model plus shipping and any external design charge. The primary result is the cheaper option and the dollar difference for the specific quantity entered. The result items also show filament needed, filament cost, total electrical cost, and an approximate break-even quantity when the inputs produce a positive finite value.

What to enter

Start with printer price and accessories and setup. Accessories may include a build surface, tools, enclosure, dryer, spare nozzles, calibration aids, ventilation items, or a starter material kit. Enter filament price per kilogram and filament density in grams per cubic centimeter. PLA is often around 1.24 g/cm³, which is why the default is 1.24, but you should use the material you actually plan to print.

The volume per model field is critical. The calculator multiplies this volume by density, so the input should represent printed material volume, not the outside dimensions of the object. If a slicer reports material weight, use that as your best source and convert it back to a volume estimate if needed. Enter number of models, printer power, electricity cost, and print time per model. Then add design/software cost to buy, outsourcing price per model, shipping cost, and design cost to outsource.

Formula

The calculator estimates filament mass in kilograms:

filament kg=model volume×filament density×model count1000\text{filament kg} = \frac{\text{model volume} \times \text{filament density} \times \text{model count}}{1000}

Filament cost is:

filament cost=filament kg×filament price\text{filament cost} = \text{filament kg} \times \text{filament price}

Electricity is based on watts, hours, quantity, and price per kilowatt-hour:

electricity total=printer power1000×print hours×model count×electricity cost\text{electricity total} = \frac{\text{printer power}}{1000} \times \text{print hours} \times \text{model count} \times \text{electricity cost}

Buying cost is:

total buying cost=printer price+accessories+buy design cost+filament cost+electricity total\text{total buying cost} = \text{printer price} + \text{accessories} + \text{buy design cost} + \text{filament cost} + \text{electricity total}

Outsourcing cost is:

total outsourcing cost=outsource price×model count+shipping cost+outsource design cost\text{total outsourcing cost} = \text{outsource price} \times \text{model count} + \text{shipping cost} + \text{outsource design cost}

The displayed difference is the absolute value of buying cost minus outsourcing cost:

cost difference=∣total buying cost−total outsourcing cost∣\text{cost difference} = \left|\text{total buying cost} - \text{total outsourcing cost}\right|

The approximate break-even quantity is:

break-even models=printer price+accessories+buy design cost−shipping cost−outsource design costoutsource price−filament cost per model−electricity cost per model\text{break-even models} = \frac{\text{printer price} + \text{accessories} + \text{buy design cost} - \text{shipping cost} - \text{outsource design cost}}{\text{outsource price} - \text{filament cost per model} - \text{electricity cost per model}}

The calculator shows a positive break-even quantity only when outsourcing’s per-model price exceeds the per-model buying cost and the resulting quantity is positive.

Example

Use the default case: 250 USD printer price, 50 USD accessories, 24 USD per kg filament, 1.24 g/cm³ density, 40 cm³ per model, 25 models, 120 W printer power, 0.16 USD per kWh, 5 hours per model, 0 USD buy-side design cost, 12 USD outsource price per model, 15 USD shipping, and 0 USD outsource design cost.

Filament needed is 40 × 1.24 × 25 ÷ 1,000, or 1.24 kg. Filament cost is 1.24 × 24, or 29.76 USD. Electricity is 120 ÷ 1,000 × 5 × 25 × 0.16, or 2.40 USD. Total buying cost is 250 + 50 + 0 + 29.76 + 2.40, which equals 332.16 USD. Total outsourcing cost is 12 × 25 + 15 + 0, or 315.00 USD. The difference is 17.16 USD, so the calculator’s primary result says Outsourcing is cheaper by 17.16 USD.

The approximate break-even uses the fixed-cost difference: 250 + 50 + 0 − 15 − 0 = 285 USD. Per-model variable buying cost is 40 × 1.24 × 24 ÷ 1,000 plus 120 ÷ 1,000 × 5 × 0.16, or 1.1904 + 0.096 = 1.2864 USD. The denominator is 12 − 1.2864, or 10.7136 USD. Break-even is 285 ÷ 10.7136, or 26.60 models, displayed as 27 with no decimals.

How to decide

Buying can make sense when you will print many similar parts, need rapid iteration, have staff who can maintain the machine, and can tolerate occasional failures. It can also support learning, prototyping culture, and faster internal feedback. Outsourcing can make more sense when print volume is low, quality requirements are high, the material is specialized, or delivery reliability matters more than unit cost.

For business decisions, compare the result with the break-even calculator, place the equipment purchase in the business budget calculator, and test the return case with the roi calculator. A printer that looks cheap per model may still be a poor investment if it sits idle after one project, while a printer that looks expensive for the first batch may be justified by repeated product-development cycles.

Caveats

The calculator does not include labor, post-processing, failed prints, maintenance, depreciation, training time, safety equipment, ventilation, software subscriptions beyond the single design cost input, or financing. It also assumes every model has the same volume and print time. For commercial use, build a separate allowance for scrap, inspection, finishing, packing, and customer support. For regulated parts, verify that the selected process and material meet the required standards before treating the calculator’s lower-cost option as acceptable.

Method and source limits

NIST sources establish additive-manufacturing process context, and DOE establishes the watts × hours ÷ 1,000 electricity conversion. All prices, density, volume, setup, shipping, and design values are user-entered scenario assumptions; maintenance, failures, and labor are excluded. Sources and linked guidance below were accessed July 9, 2026; later revisions are outside this page version.

Sources

Frequently asked questions

What does this 3D printer buy vs outsource calculator include?
The buying side includes printer price, accessories, design or software cost, estimated filament cost, and electricity. The outsourcing side includes the service price per model, shipping, and outsource design cost. The result compares total buying cost with total outsourcing cost for the quantity, model volume, material density, and print time entered.
How does the calculator estimate filament needed?
It multiplies model volume by filament density and by the number of models, then divides by 1,000 to convert grams to kilograms. That means the volume input should represent the printed material volume you want priced. If your slicer reports material grams directly, convert that into an equivalent volume or adjust the volume input.
Does the result include failed prints and maintenance?
No. The calculation does not add failure rate, nozzle wear, bed sheets, repairs, calibration time, or labor. Those costs can be material for real 3D printing operations. Add a cushion outside the calculator or increase accessories, design, or per-model assumptions if you want a more conservative buying estimate.
How is electricity cost calculated?
Electricity equals printer watts divided by 1,000, multiplied by print hours per model, number of models, and cost per kilowatt-hour. This is a direct energy estimate. It does not include warm-up time, standby power, ventilation, air conditioning, post-processing tools, or the cost of supervising long prints.

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