The real cost of FDM 3d printing

The Real Cost of FDM 3D Printing

FDM 3D printing also known as Fused Deposition Modeling might seem like a cheap way to make stuff at home, but there’s more to the cost than just buying a printer and hitting print. While it’s definitely more affordable (and less hazardous) than resin printing, it still comes with a handful of hidden expenses.

In this post, I’ll break down the real cost of owning and using an FDM printer — from filaments and maintenance to energy and time. So let’s pass that build plate and dive in!

Speaking from Experience

I speak from experience and a lot of research. What I’m sharing here isn’t just guesses pulled off the internet. I’ve went though it.

That said, if you’re using something like an Ender 3, this post might not fully apply to you, especially if you’ve done a bunch of upgrades. I won’t be including the cost of mods or tinkering.

Instead, I’m using the Bambu Lab A1 Mini as my reference point, because that’s the printer I personally use. It’s a great out-of-the-box machine, and the numbers I share here are based on real use, not just spec sheets.

The Printer

Why I Use the A1 Mini

I’ve talked about the Bambu Lab A1 Mini in a previous post, so if you want a full breakdown, check that out. But here’s the short version:

I chose the A1 Mini because it’s what I have — and honestly, it’s been amazing. The print quality is top-tier, especially for the price. It’s not just a budget printer; it’s a budget printer that performs.

It wasn’t my top pick originally, but the only reason I didn’t go with another printer is simple: I’ve never used any other 3D printer. So I’m sticking to what I know and trust.

As for price? Right now, the A1 Mini sells for around $199 on sale, but its usual price is $299., which is honestly a steal for what you get.

A Quick Note on My Top Pick

If you’re wondering what my actual top pick is — it’s not the A1 Mini. It’s the Elegoo Centauri (not the Centauri Carbon). Why? Because it’s insanely affordable for what it offers. But I’ll save my full thoughts on that for another post.

For now, I’m sticking with the A1 Mini since it’s the one I personally use. That way, everything I say in this post is backed by my own experience, not just online specs.

Filament

I use PLA filament — because it just works. It’s easy to print with, sticks to the bed well, and gives great results whether you’re just starting out or have been printing for a while. Ask pretty much anyone: PLA is the go-to.

Let’s be real — filament doesn’t need to be fancy. I think the sweet spot is between $13 to $18 per spool. More expensive than that? Probably overkill. Cheaper than that? You’re likely asking for problems.

Personally, I use Elegoo filament, and yeah — I love it. It’s affordable, prints smooth, and rarely gives me trouble. Plus, the final look? Clean and consistent every time.

How Much Does 3D Printing Cost in Electricity?

If you’re just getting into 3D printing or want to know what it costs to run your machine, the power bill is one of those questions that always comes up. Good news: printing doesn’t cost much electricity at all.

In the U.S., the average cost of electricity is about 17 cents per kilowatt-hour (kWh) as of 2025. Desktop 3D printers like the Bambu A1 Mini usually pull between 50 to 100 watts per hour when printing. If your printer uses around 70 watts per hour, that works out to 0.07 kWh. Multiply that by 17 cents, and the cost comes to about 1.2 cents for every hour of printing. Stretch that over 100 hours of print time, and you’re only looking at roughly $1.20 in electricity costs.

That means even if you’re running your printer almost nonstop, the power bill will hardly notice. 3D printing remains one of the most cost-effective hobbies or side hustles in terms of energy consumption. 

Safety

Should You Wear a Mask?

Even though PLA filament is generally considered safe and is the easiest to print with, it still releases tiny particles (ultrafine particles) into the air when melted. These particles can be irritating if you breathe them in for long periods.

Here’s what I recommend:

  • Always print in a well-ventilated area — open a window or use a fan.

  • If you’re printing long jobs or in a small room, wearing a mask when near the printer can help reduce inhaling particles.

  • For extra safety, consider an enclosure with ventilation or an air purifier nearby.

With these simple steps, you can keep your printing environment safe and comfortable.

That means you’ll probably want to budget for a mask (~$10) and a fan (~$30).

✨ Wrap-Up:
FDM printing is affordable, but it’s not free. Between the printer, filament, electricity, and a bit of safety gear, the costs add up but not in a scary way. With smart budgeting, you can enjoy reliable 3D printing without breaking the bank.

Printer: Bambu Lab A1 Mini — $299

per month Filament: 1 spool of PLA — ~$15 (average of $13–$18)

per month Electricity: 100 hours of printing — ~$1.20

Safety gear: Mask + fan — ~$40



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