Metal 3D printing cost is the number that stops most conversations about metal additive manufacturing, and the quote you get back is rarely the whole figure. The print itself is only one line. What surrounds it, supports, heat treatment, plate removal, machining and inspection, is where the money usually goes, and none of that is visible in a price per cubic centimetre.
One thing to get out of the way first, because it should shape how you read the rest: we do not offer metal 3D printing. We print polyamide by laser sintering. That means we have nothing to sell you on the metal side of this comparison, and it also means we spend a lot of time looking at parts that were quoted in metal and asking whether they needed to be.
What Actually Drives Metal 3D Printing Cost?
Metal 3D printing cost is driven by machine time, powder consumption, and a post-processing chain that is mandatory rather than optional. In laser powder bed fusion, the process most people mean by metal 3D printing, a part is fused layer by layer under an inert atmosphere, then cut off a build plate and finished. Each of those stages carries cost, and the print is not the biggest one on most parts.
The drivers break down like this:
Machine and facility time. Metal systems are capital equipment with inert gas consumption, controlled powder handling and real safety infrastructure around reactive powders. That overhead is recovered per build hour, and build hours are set mostly by how tall the part stands in the machine, because every layer costs a recoat and a scan pass regardless of how little material is on it.
Feedstock. Metal powder is sold by weight, and metal is several times denser than polyamide. The same geometry therefore consumes several times the mass in metal that it would in nylon, before you account for the price difference per kilogram. Geometry that looks affordable in polymer can become the dominant cost line in metal purely through density.
Support structures. Metal parts need supports, both to anchor against thermal stress and to conduct heat out of overhanging features. Supports consume powder, add build time, and then have to be removed by hand or by machining. They are a cost you pay three times.
Build density. Because of supports and thermal management, metal builds cannot be packed as tightly as polymer builds. Fewer parts per build means each one carries more of the machine time.
The Cost Line Nobody Puts on the Quote
Post-processing is the part of metal additive manufacturing that surprises people, because it is a sequence of separate operations rather than a single finishing step. A metal printed part is not usable when the build finishes. It is usable several process steps later.
Typical sequence: stress relief while the part is still attached to the plate, separation from the plate, support removal, then surface finishing, then machining of any surface that has to hold a real tolerance or seal. Critical parts add inspection on top, and some applications add hot isostatic pressing to close internal porosity. Every one of those steps is labour, machine time, or both, and each one is an opportunity for a part to fail and be rebuilt.
This is also why as-printed metal tolerances are not the tolerances you design to. Interfaces get machined afterwards, which means a metal printed part is often a hybrid process part wearing an additive label. Design guidance for the process is standardised in ISO/ASTM 52911-1, the design standard for laser-based powder bed fusion of metals, and the equivalent for the polymer side of this comparison is ISO/ASTM 52911-2.
Why Sintered Nylon Costs Less to Produce
Laser sintered polyamide is cheaper for structural reasons, not because it is a lesser process. The powder bed supports the part as it builds, so there are no support structures to grow or remove, and parts can be nested in three dimensions throughout the build volume rather than sitting in a single layer on a plate. Remove supports and thermal post-processing from the equation and most of the metal cost stack disappears with them.
The practical consequence is that a sintered nylon part usually goes from build to usable with depowdering and an optional finishing step, while a metal part goes from build into a queue of operations. That difference shows up in price and in lead time at the same time, which is why converted parts often arrive sooner as well as cheaper.
| Cost driver | Metal powder bed fusion | Laser sintered polyamide |
|---|---|---|
| Support structures | Required, then removed by hand or machining | None, the unfused powder cake supports the part |
| Build packing | Limited by supports and heat management | Dense nesting in three dimensions throughout the build |
| Feedstock mass for the same geometry | High, metal is several times denser | Low |
| Mandatory thermal post-processing | Stress relief, sometimes hot isostatic pressing | None |
| Removal from the machine | Cut from a build plate | Lift out of the powder cake and depowder |
| Machining after printing | Usually needed on tolerance and sealing surfaces | Only where a critical feature demands it |
| What drives the price most | Post-processing labour and part height | Volume of the build the parts occupy |
| Practical lead time | Longer, set by the finishing chain | Shorter, set mostly by build and depowder |
Where We Sit in This Comparison
We are Anubis 3D Industrial Solutions. We design and manufacture end-of-arm tooling and produce parts by selective laser sintering in polyamide at our facility in Mississauga, Ontario. We do not provide metal 3D printing, we do not broker it, and this article is not a route to a metal quote from us.
We are saying that plainly because the honest version of this comparison is more useful to you than a sales pitch would be. Plenty of parts should stay metal, and a supplier who only sells polymer has an obvious incentive to tell you otherwise. What follows is the test we actually apply when a customer sends us a metal part and asks whether printing it in nylon makes sense.
When Sintered Nylon Does the Same Job
A nylon part replaces a metal one when the load case, the temperature and the wear conditions all sit inside what polyamide can carry, and when the part gains something from being lighter. That last condition is the one people forget, and on robot tooling it is often the whole argument.
The checks worth running, in the order we run them:
Is the load inside the material? Published values for laser sintered PA12 are on our PA12 nylon material page. If the part is nowhere near those limits, which is true of a great many brackets, covers, fixtures and tooling bodies, the metal was specification by habit rather than by calculation.
Can geometry replace modulus? Polyamide is far less stiff than steel, but stiffness is a function of shape as well as material. Ribs, closed sections and increased wall thickness recover a large amount of what the material gives up, and additive manufacturing charges you almost nothing for that complexity. A printed part is rarely a like for like copy of the metal one, and it should not be.
Can inserts handle the hard points? Threads, bearing seats and wear faces are usually the real objection to polymer, and they are usually solved locally with threaded inserts or a metal wear plate rather than by making the entire part metal.
Does weight buy you anything? On end-of-arm tooling it buys payload and acceleration, which is why we print robot end-of-arm tooling rather than machine it. Our large vacuum manifold write-up documents a printed manifold at 2.3 kg against conventional metal versions above 20 kg, and our carton extracting tool conversion documents a machined metal tool rebuilt in Nylon 12 at an equivalent final price. Both are our own project records, so read them as what we saw on those parts rather than as a rule.
When It Has to Stay Metal
Sometimes the metal is the answer and no amount of clever geometry changes that. Being straight about where the boundary sits is the only way the rest of this article is worth reading.
Keep the part in metal when the service temperature runs above what polyamide tolerates, when it carries a high sustained structural load or a fatigue-critical one, when it is a pressure-containing or sealing component, when it slides against metal without a replaceable wear element, or when stiffness itself is the specification and geometry cannot make up the gap. Keep it in metal too when a customer specification, an industry code or a regulatory approval names a metal alloy, because that is a paperwork requirement rather than an engineering one and it does not bend.
For those parts the useful question is not nylon versus metal but which metal process is cheapest, and the answer is frequently machining rather than metal printing. Metal additive earns its cost when the geometry is genuinely impossible to machine, such as conformal cooling channels or a consolidated assembly. If a machinist can make it, metal 3D printing usually costs more than it saves.
How to Compare the Two Quotes Honestly
Compare delivered cost, not print cost. A metal quote and a polymer quote are only comparable once both include every operation needed to make the part usable, plus the lead time each one commits you to.
Three habits make that comparison real. Ask the metal supplier which post-processing steps are inside the quoted number and which are extra, because that is where the two prices usually diverge. Compare at your actual annual quantity rather than at one piece, since setup and minimum charges distort a single unit badly in both directions. And for tooling specifically, carry the weight difference through to the robot, because a lighter tool can let a smaller robot do the job or let the existing robot run a faster cycle, and that saving lands in a different budget than the part price.
If you want to sanity check whether a part is a sensible sintering candidate before requesting anything, our design guidelines for SLS cover the geometry limits, and our selective laser sintering service page explains what we actually run.
Metal 3D Printing Cost Questions
Why is metal 3D printing so expensive?
Because the print is only one step. Metal powder bed fusion adds inert atmosphere and powder handling overhead, support structures that must be built and then removed, mandatory stress relief, separation from a build plate, and machining of any surface that has to hold a tolerance. Post-processing labour, not the print, is usually the largest share of metal 3D printing cost.
Is metal 3D printing cheaper than machining?
Usually not. Metal additive manufacturing becomes cost effective when the geometry cannot be machined at all, for example internal conformal channels or a consolidated multi-part assembly. If a machinist can produce the part conventionally, machining is generally the cheaper route.
Does Anubis 3D offer metal 3D printing?
No. We produce parts by selective laser sintering in polyamide, and we design and manufacture end-of-arm tooling in Mississauga, Ontario. We do not provide or broker metal 3D printing.
Can a 3D printed nylon part replace a metal part?
Often, when the load, temperature and wear conditions sit inside what polyamide can carry and when lower weight is an advantage. Threads and wear faces are handled with inserts, and stiffness is partly recovered through ribs and closed sections. Parts that run hot, seal pressure, carry high sustained loads or are specified in a named alloy should stay metal.
Wondering If Your Metal Part Should Stay Metal?
Send us the part, the loads it carries and the environment it runs in, and our team will tell you whether sintered nylon is a real option or whether you are better off machining it. We will say so either way, since we do not sell the metal side.
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