The most effective ways to reduce 3D printing costs happen before the printer starts — in design decisions, technology selection, and how you structure the job. Material volume, support structures, print time, post-processing requirements, and technology choice all drive cost in ways that are largely controllable if you know what to optimize.
This is what a professional print shop actually looks at when a job comes in over budget.
Why Is 3D Printing So Expensive?
3D printing cost breaks down into five components:
Material consumed — both the part itself and any support material printed alongside it. On FDM and SLA jobs, support material can add 20–40% to material cost on complex geometry.
Machine time — how long the printer runs. Tall parts with many layers take longer than flat parts with the same volume; orientation matters.
Post-processing labor — support removal, sanding, priming, curing, or secondary operations. This is consistently underestimated and can exceed the cost of the print on highly finished parts.
Technology and material selection — SLS costs significantly more per part than FDM; engineering resins cost more than standard resins; metal printing is in a different category entirely. Using more capability than the application needs is a common source of avoidable cost.
Setup and engineering time — file preparation, orientation decisions, print parameter configuration. On complex jobs, this is real time with real cost.
Most cost reduction levers are on the design and specification side, not the production side.
Design Changes That Reduce 3D Printing Costs
These are the highest-impact changes, in order:
Reduce material volume. The most direct cost driver is how much material the part consumes. For parts that don’t need to be solid, designing with hollow geometry and appropriate wall thickness reduces material significantly. Ribs, pockets, and cutouts in non-critical areas reduce mass without affecting function when the part is oriented correctly. If only a portion of a larger assembly needs to be printed, isolate that section — printing a full housing to verify a single mounting interface wastes material and time.
Eliminate or minimize support structures. Support material is printed and then discarded. Most FDM printers can bridge horizontal gaps and handle overhangs up to roughly 45–50 degrees without supports. Designing with this in mind — chamfering overhangs, orienting features to self-support, splitting complex parts at sensible planes — can eliminate supports entirely. The same part in a different orientation may require dramatically less support volume; this is always worth working through before committing to a print.
Simplify surface finish requirements. A part that needs extensive sanding, priming, and painting can cost more in finishing labor than the print itself. If appearance requirements can be met with better print orientation, a higher-quality base material, or accepting the as-printed surface in non-visible areas, finishing labor drops significantly.
Right-size wall thickness. Walls that are thicker than structurally necessary add material and time. Most FDM structural applications work fine at 1.2–2.4mm wall thickness; SLA can go thinner. Over-specifying wall thickness because it “feels stronger” is a common and avoidable cost source.
Choose the Right Technology for the Job
Using more capable — and more expensive — technology than the application requires is one of the most common sources of unnecessary cost. A practical guide:
FDM delivers the best value for functional prototypes, structural brackets, tooling, jigs, and fixtures where surface finish is not the priority. It’s the default choice for most engineering applications where form and fit need to be verified.
SLA is worth the premium for presentation models, fine-detail parts, and applications where smooth surfaces matter out of the printer. It’s not the right choice for a structural part that will never be seen.
SLS has a higher base cost per job, but produces no support structures and strong mechanical properties across the part. For complex functional geometry at low volumes, it’s often the most cost-effective technology when you factor in the post-processing savings. Our 3D printing technology comparison covers these tradeoffs in detail.
Batch and Orient Strategically
Setup time is roughly constant regardless of how many parts are in a build. Running multiple small parts in a single job — filling the build volume efficiently — amortizes that setup cost across more parts and reduces cost per piece. If you have several iterations or variants to test, timing them together and nesting them in the build volume is a straightforward cost reduction.
Orientation also affects cost in ways that aren’t always obvious. The same part in a different orientation may print faster, require less support, and produce a better surface finish on the critical faces — all at once. Working through orientation before printing, not after, is time well spent.
Post-Processing Is a Hidden Cost Driver
Finishing work is consistently underestimated. Support removal on complex geometry can take hours. Sanding through multiple grits, priming, and painting on presentation parts adds up quickly. Two things help: designing to minimize supports in the first place, and being deliberate about which surfaces actually need finishing. Parts often have a “show side” and a “hidden side” — the hidden side rarely needs the same treatment, and not finishing it saves real time.
Frequently Asked Questions
What is the single biggest factor in 3D printing cost?
For most jobs, it’s a combination of material volume and post-processing labor. A part with complex overhangs that requires heavy support and extensive finishing can cost two or three times as much as a well-designed part of equivalent size. Design is where the leverage is.
Is SLS cheaper than SLA?
Per job, SLS typically costs more than SLA. But SLS requires no support structures and produces strong, functional parts across the entire build volume — so when you factor in post-processing time, SLS can be more cost-effective than SLA for complex functional geometry. It depends entirely on the application.
Can I reduce 3D printing costs without changing my design?
Yes — technology selection, orientation, and batching can all reduce costs on an existing design. But the biggest savings come from design changes. If cost is a concern, share the design early; a good print service will flag the high-cost elements before they’re locked in.
The most effective cost reduction strategy is involving your 3D printing service during design, not after. At Kemperle Industries, design-for-printability review is part of how we work — we’ll flag cost optimization opportunities before a job goes to print. Get in touch to talk through your project.
