If you've ever wondered how much it costs to 3D print a part, the quick answer is: it depends. The cost of a 3D print isn't a flat rate — it's the sum of a whole range of factors that are easy to overlook. In this guide, we'll break it all down, from the gram of material to the last penny of electricity, so you can truly understand how the final price is calculated. 🤓
Uncovering the Real Cost of a 3D Print 🧐
Calculating the price of a 3D print involves a lot more than adding up the material you've used. You need to account for direct costs, indirect expenses, and even the value of your time. The goal? To arrive at a realistic figure that works equally well for budgeting personal projects and setting fair prices for professional services.
If you'd rather calculate than read, upload your STL or choose a preset and instantly get your cost per part plus a suggested selling price. Open the cost calculator →
To begin with, having access to quality materials at a great price is essential. Thanks to specialist retailers like Mr Resin, it's now easier and more affordable than ever to find the best resin for your 3D printer from leading brands — opening up a world of possibilities for makers across Spain.
The Rise of 3D Printing in Spain 🇪🇸
The 3D printing sector has grown enormously in Spain in recent years. This growth has been especially striking in areas like dentistry and scale modelling, where increasingly accessible material prices are driving adoption on a large scale.
In fact, prices in the hobby market have dropped by 25–30% since 2020. This decline, driven by competition, has made quality printers and resins far more affordable. As a result, adoption of the technology in Spanish fablabs has grown by 40% annually, building a strong local ecosystem. If you'd like to dig deeper, you can read more about this market trend.
The main question everyone faces when starting out is always the same: which technology is cheaper in the long run? The short answer is that it depends on the type of parts you're making. We recommend checking out our article where we compare whether filament or resin is cheaper for a complete breakdown.
Calculating Material Cost: Down to the Last Gram ⚖️
Let's start with the most obvious factor — the one that stands out most when working out the cost of a 3D print: the material you use. Fortunately, it's also the easiest to measure accurately.
Your best ally here is your slicer software (such as Chitubox, Lychee, or Cura). Before you hit "print," it will tell you the exact amount of material the print will use, supports included. It usually displays this in grams (g) or millilitres (ml).
The magic formula for material cost ✨
Don't worry — the maths here is straightforward. You only need two pieces of information: how much you paid for the bottle of resin or the filament spool, and the weight your slicer has estimated.
The formula is: (Material price / Total grams in the bottle or spool) x Grams required for the print = Material cost.
Let's walk through a practical example. Say a bottle of water-washable resin weighing 1 kg (1000 g) costs you €30. Your model, supports and all, will use 50 grams.
The calculation is as simple as:
(€30 / 1000 g) x 50 g = €1.50
That's all there is to it! You now have the base material cost for that print. 🎉
Resin vs filament? The eternal cost debate
Not all materials are created equal, and not all carry the same price tag. Knowing which to choose is essential for staying on budget and optimising the cost of a 3D print.
- 3D printing filaments: PLA and other 3D printing filaments tend to be cheaper per kilogram. They're ideal for large prototypes, functional parts that need to take some punishment, or models where ultra-fine detail isn't the priority.
- 3D resins: Although the price per kilogram can be slightly higher, the print quality and level of detail they deliver is in a completely different league compared to FDM. Resin is the go-to choice for miniatures, jewellery, or anything that demands surgical precision.
Bear in mind that even within resins, there's a whole world to explore. An ABS-like resin is perfect if you need mechanical strength, while a high-definition resin is the top pick for capturing even the finest details. If you're curious about how many prints you can get out of a single bottle, check out our article on how much you can print with 1 litre of resin.
The hidden costs that blow your budget 🤫
This is where many people go wrong when calculating the cost of a 3D print. Thinking only about materials is like baking a cake and forgetting about the flour and the oven. If you're offering a printing service, you'll almost certainly end up out of pocket — and even as a hobbyist, the true cost might come as a nasty surprise.
To calculate costs like a professional, you need to factor in indirect expenses. Start with electricity consumption 💡. And no, it's not just the printer. The computer you use to prepare your files, the wash station, and the curing unit are all drawing power for hours at a time. It might seem like a trivial expense, but those pennies add up on your electricity bill.
Depreciation and consumables: the forgotten duo
Then there's equipment depreciation, a cost that almost nobody factors in. Your printer has a finite lifespan. Say you paid £500 for it and expect it to last around 2,000 hours before it gives up the ghost. That means every hour of printing is effectively "costing" you £0.25 that you should be adding to your final price.
And last but certainly not least: consumables. Those small, sneaky expenses that quietly drain your budget if you're not keeping a close eye on them:
- Nitrile gloves and a respirator mask to keep you safe. 🧤
- Isopropyl alcohol (IPA) or alternatives to get your prints spotlessly clean.
- Paper towels (you'll go through far more than you'd expect!).
- Key replacement parts like FEP/ACF films and, eventually, LCD screens.
These materials wear out, and their cost needs to be spread across all your prints. The 3D printing market is booming, particularly in prototyping, which accounted for 50–60% of applications in 2023. In such a competitive space, keeping your costs under control is essential — and having a reliable supplier like Mr Resin for your consumables makes a real difference. If you want to dig deeper, you can find out more about 3D market growth in this report.
Tracking these hidden costs is what separates a hobbyist from a professional. It ensures your service or hobby remains financially sustainable in the long run — and saves you from any nasty surprises when you check your bank account. 💸
The value of your time: the human factor 🧑🎨
So far we've focused on tangible costs — numbers and materials. But there's one crucial piece of the puzzle missing, the most valuable one, and ironically the one most often overlooked when doing the maths: your time. ⏳
Whether you print as a hobby or offer a professional service, every project eats up hours of work that you need to account for. Your time isn't free — it's your most important resource!
Think about everything you do beyond simply hitting the print button. There's all the prep work: optimising the 3D file, placing supports intelligently, slicing the model, and dialling in your settings. Then comes monitoring the print and, of course, post-processing. This stage can be seriously time-consuming: washing the print, curing it, carefully removing supports without leaving marks, and finally cleaning all your equipment.
What's your hourly rate worth?
And if you go the extra mile and start painting the piece, the hours really stack up. Sanding for a silky-smooth finish, priming, applying paint layers, picking out the details, and adding a final varnish coat… all of that adds hours upon hours to a project.
To calculate the price of a 3D print fairly, you need to assign a value to your time. A simple starting point is to set an hourly rate (for example, £10/hour) and multiply it by the total time you invest.
Quick example: If you spend 2 hours on the entire process (prep and post-processing) at £10/hour, you need to add £20 to the final cost of your print. As straightforward — and as important — as that.
3D printing costs in Spain have dropped dramatically in recent years. For engineering and design studios, savings on prototyping can reach 30-50% compared to traditional manufacturing methods. These savings come not just from materials, but from a massive reduction in labour hours and lead times — a key factor driving adoption of the technology, as you can see in industry reports.
Optimising your time is everything. Using quality products like Vallejo paints or premium brushes lets you achieve far better finishes in less time. Indirectly, this lowers the total project cost and, more importantly, increases the value of your work.
Practical examples for calculating your final 3D printing cost 🔢
Theory is great, but let's get to what really matters: real-world application. To show you how all of this translates into actual figures, we're going to break down the cost of 3D printing across two very different projects. Let's dive in!
Case 1: Wargaming miniature (28mm)
Imagine you want to print a highly detailed figure for your tabletop army. It's a small piece, and here it's all about quality and fine detail.
- Material: We'll use a high-definition resin to capture every last detail. The figure is tiny and weighs just 10 grams. Buying a 1kg bottle for €40, the material cost is almost negligible: €0.40.
- Indirect costs: The print runs for about 2 hours. Adding electricity, printer depreciation, and FEP film wear, we can round this up to roughly €0.75.
- Labour: This is where it gets interesting. Post-processing — washing, curing, and carefully removing supports — is a painstaking job that takes around 30 minutes. If we value our time at a modest €10/hour, that's already €5.
Total cost of the miniature: €0.40 (material) + €0.75 (indirect costs) + €5 (time) = €6.15. The takeaway? Your time is worth far more than the resin!
Case 2: Functional prototype (15x10x5 cm enclosure)
Now for something completely different. Our goal here is a large, sturdy part — like an enclosure for an electronics project we're building.
- Material: We need something that can take some punishment, so we're going with an ABS-like resin. The part is considerably larger and more solid, weighing around 300 grams. With a 1kg bottle at €35, the resin cost jumps to €10.50.
- Indirect costs: This is a long print — around 10 hours. Power consumption and machine depreciation add up more here, so we estimate roughly €3.
- Labour: Post-processing is quicker and less fiddly, with about 15 minutes being more than enough. At €10/hour, that's €2.50.
Total cost of the prototype: €10.50 (material) + €3 (indirect costs) + €2.50 (time) = €16. In this case, material is the clear dominant cost factor.
As you can see, even though the formula is the same, the result changes completely depending on the project. If you want to find out whether this kind of work is worth it in the long run, don't miss our article on whether 3D printing is profitable.
Conclusion 🏁
As you can see, calculating the cost of a 3D print isn't as simple as adding up grams of material. It's a puzzle 🧩 where every piece matters: the material, electricity, machine wear, consumables — and most importantly, your time!
With this guide, you now have all the tools you need to price your prints fairly, make smarter decisions, and make sure no hidden cost catches you off guard. No more guessing whether you're making or losing money!
Now that you know how to do it, why not head over to our online store and take a look around? At Mr Resin, you'll find everything you need for your projects. 😉
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✨ Happy Printing! 🚀
Frequently asked questions about 3D printing costs 🤔
To wrap up this guide, let's answer some of the most common questions that come up when calculating the cost of a 3D print — clearly and straight to the point!
Which is cheaper, resin printing or filament (FDM) printing?
This is the million-dollar question. As a general rule, filament (FDM) printing tends to be more affordable for large, functional parts where pinpoint precision isn't the top priority. The cost per kilogram of material is, in most cases, lower.
That said, resin — even if it costs a little more per kilogram — is simply unbeatable for miniatures, jewellery, or anything that demands extreme detail. In many cases, the quality of the final result more than justifies the difference in price.
How can I reduce my 3D printing costs?
Absolutely — there are several tried-and-tested tricks for cutting costs without sacrificing quality. The most effective ones are:
- Hollow out your models: This is the golden tip, especially for resin printing. Not only will you use significantly less material, but you'll also reduce the risk of suction failures during the print.
- Orient your parts strategically: A smart orientation can dramatically reduce the number of supports you need. Fewer supports mean less resin used and less post-processing time.
- Choose your materials wisely: You don't always need the most expensive resin in the catalogue. For prototypes or everyday projects, go for materials that offer the best value for money.
Does layer height affect the price?
Yes, and quite significantly — though not so much in terms of material usage. A higher resolution (meaning thinner layers) causes print time to increase exponentially.
As we've already seen, this translates directly into higher electricity costs and greater machine wear (depreciation). These are two factors that, while easy to overlook, do add up in the final price.
Is a wash and cure station really worth it?
Absolutely! 💪 While it might seem like a significant investment upfront, the time you save on labor is huge. Think about all the hours you'd spend manually washing and curing your prints.
It also makes handling chemicals like isopropyl alcohol much safer, and gives you a consistent, professional finish on every single print. It's one of those purchases where, once you have it, you wonder how you ever managed without it. It pays for itself much sooner than you'd expect.