Is 3D Printing Eco-Friendly? The Truth About Materials and Sustainability

3D printing is more environmentally friendly than traditional manufacturing: additive methods generate up to 90% less material waste than subtractive milling, PLA filament is derived from corn starch or sugarcane, and local production eliminates emissions from intercontinental shipping.

At a time when (rightly so) plastic waste is a major concern, technology based on melting plastic might seem like a step in the wrong direction. However, the opposite is true. 3D printing, also known as additive manufacturing, has the potential to be one of the most ecological production methods. Why?

1. Why is additive manufacturing more eco-friendly than subtractive?

Traditional manufacturing (milling, turning) is subtractive. You take a large block of material and remove from it until the product remains. This typically generates 50–80% waste from the starting material – for metal parts, the waste ratio can be even higher.

3D printing is additive. Material is added only where needed. Waste is minimal – consisting only of supports or failed prints, which is typically less than 10% of total material use. Furthermore, the infill inside the model is often latticed, so you use much less material than a solid casting while maintaining strength.

2. What eco-friendly materials are available for 3D printing?

The most commonly used material in 3D printing is PLA (Polylactic Acid).

• It is not a petroleum product – it is made from renewable resources.
• It is made from corn starch or sugarcane.
• It is biodegradable (in industrial composting facilities at temperatures above 60 °C).
• It does not emit toxic fumes during printing, unlike ABS.

Of course, we also use technical plastics (PETG, ASA), which are recyclable much like PET bottles (recycling code 1).

3. How does local production reduce a product's carbon footprint?

3D printing allows things to be manufactured locally. Instead of a spare part for your mixer being produced in China, sailing for a month on a ship, and then traveling by truck across Europe, we print it in Prague. The digital file travels via the internet, not a container.

The average CO₂ emission from sea freight between Asia and Europe is approximately 15–20 g CO₂ per tonne per km – for a typical parcel-sized part, this means hundreds of grams of emissions from shipping alone. Local production eliminates this entirely.

4. Why is repairability central to sustainable manufacturing?

This is perhaps the most important point. 3D printing allows you to repair things you would otherwise throw away. A cracked dishwasher wheel? A broken car door handle? A lost cap?

Instead of throwing away an entire appliance worth thousands of crowns, you can simply print a small part for a few crowns. This extends the lifespan of products and reduces electronic waste – the EU generates over 13 kg of e-waste per person per year.

In Niro3D, we think about the future. We sort production waste and prefer environmentally friendly materials wherever possible.