3D printing has a reputation as an inherently wasteful process — plastic parts made from plastic filament, offcuts and failed prints piling up in a bin somewhere. It doesn't have to work that way, and at 3DPrintWell it's something we actively design around, not an afterthought. Here's what that actually looks like in practice.
Choosing materials with a lower footprint
Where a project allows for it, we print in PETG and ASA — both recyclable thermoplastics, meaning that offcuts and failed prints from these materials can be reprocessed rather than only ever heading to landfill. We keep production waste from these materials separated for exactly that reason.
A large share of what we print is also in PLA — a plastic made from renewable, plant-based sources like corn starch or sugarcane, rather than crude oil. To be upfront about what that actually means: PLA is industrially compostable, not something you can put in a home compost bin or a standard recycling collection. It needs to go through a proper industrial composting facility to break down as intended. But choosing a plant-based material over a purely petroleum-based one, wherever the part's requirements allow it, is still a meaningful reduction in our reliance on virgin fossil-fuel plastic.
Designing parts so less filament is wasted in the first place
The biggest single lever for reducing waste isn't what happens after a print — it's the design decisions made before it starts. Many parts can be designed, or subtly reoriented, so they don't need internal support structures at all. Supports exist to hold overhanging geometry in place during printing, and once the print's finished, they're removed and thrown away — filament that never became part of the actual product.
We work with clients at the design stage to identify where a part's geometry can be adjusted to print support-free, without changing its function. It's a small conversation that has a direct, material impact on how much plastic ends up in the bin rather than in your part.
Cutting waste from multi-colour printing
Multi-colour printing has traditionally been one of the most wasteful parts of this industry. Most systems share a single nozzle across colours, which means every colour change requires purging the old filament out before the new colour can be used cleanly — often producing a surprising amount of scrap plastic over the course of a single multi-colour print.
We've moved our multi-colour work onto a Snapmaker U1, which uses a tool-changing system with a separate, independently loaded print head for each colour. Because each head stays loaded with its own material, colour changes don't require purging the old filament out — only a small amount of material from a head that's been sitting idle. Independent reviews and side-by-side comparisons of tool-changer systems like this against traditional single-nozzle, AMS-style setups have consistently found the waste difference to be dramatic — grams of scrap rather than the "poop towers" associated with older multi-colour systems. It's a genuinely different approach to the problem, not just an incremental improvement.
Dissolvable supports where they're still needed
Some geometries genuinely need support material to print successfully, however carefully they're designed. For those cases, we use PVA — a water-soluble support material — wherever the project allows. Instead of being mechanically snapped or cut away and thrown out as plastic waste, PVA supports simply dissolve in water once the print is complete, which means less solid plastic waste generated per part, particularly for complex or highly detailed geometries that would otherwise need extensive support structures.
Why this matters to us
None of this is about claiming 3D printing is a zero-waste process — it isn't, and we won't pretend otherwise. What we can do is make deliberate choices at every stage — material, design, and equipment — that meaningfully cut down how much ends up wasted, and be honest about where the limits of that are. We'd rather under-claim and over-deliver here than the other way round.
If sustainability is a factor in how you're choosing a manufacturing partner, we're always happy to talk through the specifics of a project and how these choices could apply to it.
Have a project where material choice or waste reduction matters? Get in touch and we'll talk it through.