In aerospace, a printed part is only worth as much as the paperwork behind it. That is the idea behind a new pellet-fed machine from German manufacturer AIM3D. The company has certified a version of its large-format extrusion platform, the ExAM A 510, for ULTEM 9085 aerospace parts, TCT Magazine reported on 26 October. AIM3D developed the system with Stefan Roeding of AM-MRO GmbH. The certification is less about raw speed or build volume than about one property that aviation buyers care about most: getting the same part every time, whichever machine prints it and wherever it sits on the bed.
Repeatability Is the Product
According to TCT, the requirement driving the project is simple to state and hard to meet. The tensile strength of ULTEM 9085 test specimens has to be consistent no matter which machine produced them or where on the build platform they were printed. Anyone who has printed a plate of tensile bars on a desktop machine knows why that is difficult. Parts near the edge of the bed see different temperatures and airflow than parts in the middle. Those differences show up as weaker layer bonding and scattered test results. A hobbyist can shrug that off. An aerospace qualification program cannot.
AIM3D's response is to treat the process, not just the printer, as the thing being certified. Per AIM3D, all process parameters for the A 510 were documented, standardised and optimised during certification, TCT reports. That matters because in a regulated supply chain an undocumented tweak, such as a slightly different extrusion temperature or a modified cooling setting, can be enough to invalidate the qualification of a part. Locking the parameters down is what turns a capable machine into a production tool that an auditor can trace from start to finish.
What Changed in the Hardware
Most of the hardware changes target thermal uniformity. TCT says the A 510 maintains a uniform chamber temperature, and the chamber is heated on all sides rather than from a single heater or the bed alone. For a high-temperature thermoplastic, even heating around the part is the main defence against residual stress, warping and weak interlayer bonds. It is also the most direct route to the build-position independence the certification requires.
One detail stands out: AIM3D removed the viewing window and replaced it with a camera. TCT does not give AIM3D's reasoning, but a window is plausibly a weak spot in an insulated enclosure, a patch of glass that can lose heat. Swapping it for a camera gives up the operator's direct view, and it fits the goal of a more even thermal envelope. Makers who have built insulated enclosures for engineering filaments will recognise the trade-off. Here the change is deliberate, on a machine built for qualification.
The material path is controlled as well. TCT reports that ULTEM 9085 feeding on the A 510 is managed for temperature and dryness, and includes tamper protection. The first two are familiar to anyone who has watched a wet spool of engineering polymer bubble and string. The third is a supply-chain safeguard: in certified production, it is not enough for the material to be correct; you need to be able to show that nobody swapped or contaminated it between the sealed container and the extruder.
TCT also relays AIM3D's claim of a "slightly higher density" than filament-printed parts. That is a modest claim, and it is worded as one. It is not a promise of dramatically better mechanical properties.
The Platform Underneath
The A 510 is built on AIM3D's standard ExAM 510, and the manufacturer's product page gives a sense of its scale. Note that the page describes the base machine, not the certified A 510 variant. The ExAM 510 offers a 510 x 510 x 410 mm build volume and layer heights from 25 to 250 microns with a 0.4 mm nozzle. It carries two of AIM3D's CEM-E3 pellet extruders, rated to 425 C, plus a single filament extruder. The material system is open, so users are not tied to vendor-supplied pellets. AIM3D quotes speeds of up to 500 mm/s on PA6 with 30 percent glass fibre. The machine uses linear motors and CFRP axes, and it weighs roughly 3,500 kg.
That last figure is a useful reminder of what category this is. A three-and-a-half-tonne printer is industrial equipment that lives on a factory floor, not a large desktop machine.
Why Pellets
The pellet feedstock is central to AIM3D's pitch. AM-MRO's Stefan Roeding says, as quoted by TCT, that a pellet-fed approach enables the use of unmixed recycled aviation materials. Clean, single-polymer recycled stock is far easier to put back into a qualified process than a mixed regrind of uncertain origin. For an industry under pressure to show material circularity, being able to feed recycled pellets of a known polymer straight into a certified printer is an appealing combination. It also skips the extra step of making filament.
Pellets bring the general advantages of the format as well, including access to standard granulate supply chains instead of specialist spooled filament. On the A 510, those advantages are paired with the controlled feeding regime described above, so the pitch is not cost alone but traceability too.
Formnext and What Comes Next
AIM3D plans to show the A 510 at Formnext 2026, according to TCT. The company will also present sample parts in pure, medically certified PEEK printed on an ExAM 510, along with a smaller heated-chamber ExAM machine, positioned below the ExAM 255, that is still under development. Taken together, these suggest AIM3D wants to cover more than one tier of high-temperature polymer work. The certified A 510 serves qualified aerospace production, the standard ExAM 510 handles demanding engineering materials such as PEEK, and a compact heated-chamber model could fill the gap below them. TCT did not report specifications or pricing for the smaller machine.
What It Means for Makers
Nobody reading FilamentFeed is going to put a 3,500 kg certified printer in the garage. The engineering logic behind the A 510 still carries over to smaller setups. The project shows, in a very expensive form, what serious makers already learn by experience: strength consistency comes from thermal uniformity and disciplined material handling far more than from peak speed. A chamber heated evenly on every side, dry and controlled feedstock, and parameters that are written down and never casually changed are the same habits that separate dependable engineering-polymer prints from lucky ones.
The camera-for-window swap is worth thinking about for anyone building a high-temperature enclosure. So is the idea of testing specimens from different positions on the bed instead of trusting a single bar from the centre. If you print functional parts, print tensile coupons at the corners as well as the middle. The spread between them tells you more about your machine than any single headline number.
The bigger signal is that pellet extrusion keeps moving from cheap bulk production toward qualified, traceable manufacturing. That shift will shape which materials and recycled feedstocks become widely available, and eventually how they reach makers further down the chain.
