3D print cost calculation: how to work out the real price in 2026

If you've ever printed something for a client and then wondered "did I actually make any money on that?", welcome to the club. That question is the reason I built Stimalo.

In this article I'll walk you through how to calculate the real cost of a 3D print, line by line, with concrete numbers. By the end you'll understand why charging "2x the material" is the fastest way to work at a loss.

The 5 cost lines you almost always forget

Before you throw a price at a client, put these five items on the table. Skip one, and you're not quoting: you're giving away margin.

1. Material (with real waste)

The cost of filament or resin is the obvious one. But the printed weight is not the weight of material you consume. You need to account for:

• Skirts, brims, rafts: 1-3% extra
• Supports: 5-15% depending on the model
• Multi-material purging (if you use an AMS or MMU): up to 20% more
• Failed prints (wear, detachment, errors): on average 5-10% of the volume you print in a month

A realistic waste factor for FDM is 1.10-1.15. For SLA resin, also count the IPA you use for washing (it isn't free).

2. Electricity (the most ignored line)

An average FDM machine draws between 50 and 150 watts while printing. An SLA resin printer easily reaches 200-300 W. On 20+ hour prints, electricity adds up. With energy at €0.30/kWh (the rate for vulnerable customers on Italy's regulated market, per the April 2026 ARERA update) it's no longer negligible the way it was 5 years ago.

Simple formula:

electricity_cost = (power_watts / 1000) × hours × cost_per_kWh

For a 30-hour print at 100 W with €0.30/kWh: €0.90. Not much. But if you print 200 hours a month, that's €20-60 on your energy bill you need to recover in your quotes. One caveat: the power rating on the nameplate is not the real consumption — multiplying nameplate watts by hours overestimates by 2-3×. I measured with a watt meter how much power a 3D printer really draws, numbers in hand.

ARERA, the Italian energy authority, raised rates by 8.1% in the second quarter of 2026 for vulnerable customers on the regulated market, bringing the reference electricity price to 30.24 cents per kWh, taxes included. The typical customer's yearly bill rose to €589.34 (+4.5% year over year). ARERA source. If you're on the free market with a fixed contract you probably pay less, but many Italian makers are still on the regulated rate and take the hit directly. Wherever you are, plug in your actual kWh price.

3. Machine depreciation

This is the real gap between hobbyist makers and professionals. Your printer is not free. It wears out.

Formula:

hourly_depreciation = machine_cost / (life_years × operating_hours_per_year)

Example: a €1,500 Bambu Lab X1C, estimated life 4 years, 800 operating hours/year = €0.47/h in depreciation alone. If you don't recover it, you're paying for your own machine every single job.

Add maintenance on top: nozzles, PTFE tubes, belts, hotends, build plates, lubricant. Typically €50-150/year for a consumer printer.

4. Labor (the line worth the most)

Your time spent slicing, preparing, monitoring, post-processing, talking to the client, packing. A 20-hour print can easily require 1-3 hours of human work.

An honest hourly rate for a maker in 2026: €20-40/h if you're an advanced hobbyist, €40-80/h if you're a registered professional with design and engineering skills.

5. Hardware, packaging, services

• Screws, threaded inserts, magnets, cables
• Box, bubble wrap, labels, bags
• Shipping (if you include it in the price)
• Any extra services: modeling, engineering, functional testing

These need to land on the quote too.

The total cost is the sum — the price is not

Many makers do this:

Material €10 × 2 = €20 to the client

But material is 15-30% of the real cost. If all you do is double it, you're working at a loss.

The correct price starts from the total cost (material + electricity + depreciation + labor + hardware + packaging) and applies a margin on top. Here's the difference between markup and margin:

• Markup "2x on cost": cost €50 → price €100
• Margin 50%: cost €50 → price €100 (same outcome, different math)

But if the margin you want is 40%, the price is not "cost × 1.4". It's calculated like this:

price = cost / (1 - margin/100)

With a €50 cost and a 40% margin: price = 50 / 0.6 = €83.33. Not €70.

The pricing strategies I recommend

From my experience, four price tiers cover almost every case:

Below a 25% margin you risk working for free (and paying the client). Above 80% you need to justify it with real value (design, finish, turnaround time).

How Stimalo automates the calculation

I built Stimalo precisely because every time a client asked for a quote, I spent 20 minutes redoing these sums in a spreadsheet. Now I enter printer, material, hours and weight, and the calculator produces the four strategies with net price, VAT and profit in a few seconds.

If you want to try it, you can run your first quote for free here. No signup needed to see how it works.

How much does an hour of FDM 3D printing cost?

An hour of FDM 3D printing on a consumer-professional machine costs on average between €1.20 and €2.80, considering standard material (PLA or PETG), electricity at 2026 rates, machine depreciation over 4 years and maintenance. That figure does not include human labor (slicing, setup, post-processing), which doubles or triples the total.

Here's the typical breakdown for a €1,500 FDM printer running 800 hours/year:

On a more expensive printer (e.g. €3,000 with higher power draw), the hourly cost rises to €2.50-3.00. On industrial SLA or MJF machines you're above €5-10/hour for the machine alone, before adding resin and post-processing.

How you invoice and declare these earnings is a tax question, and tax treatment depends on your country — check your local rules. If you're weighing 3D printing against injection molding for larger runs, there's a break-even comparison with real numbers.

In short

1. Every line counts: material, electricity, depreciation, labor, hardware
2. The real waste factor is higher than you think (1.10-1.15 for FDM)
3. Depreciation is the hidden cost makers ignore the most
4. Markup is not margin: a 40% margin is not "cost × 1.4"
5. A price below a 25% margin is a wrong price

If, after reading this, you realize you've been selling everything below cost for months — you're not alone. But starting tomorrow, things change.