Home / PolyJet

Full colour. Multiple materials.
One single build.

Primofort runs Stratasys PolyJet on the same Dongguan floor as our SLS and MJF lines — the process to reach for when a model has to look right, in full colour, straight off the machine, rather than just fit and function correctly in plain grey nylon.

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Full colour, single build Multi-material in one part Stratasys J-series^CONFIRM Founded 2019

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Is PolyJet right for your part?

The honest version. PolyJet earns its place for one reason — appearance — and it is the wrong tool the moment the part needs to actually function under load.

Choose PolyJet when…

Appearance carries the message. Look-like prototypes, marketing and trade-show models, medical and anatomical models, consumer product mock-ups — anything a viewer judges by colour and finish.
You need full colour straight off the machine. No painting, no post-process tinting — the model prints in colour in a single build.
The part combines materials. Rigid and flexible, opaque and clear, can be printed together in one model.
Fine surface detail matters more than mechanical strength. PolyJet resolves fine features and smooth surfaces well; it is not judged on load-bearing performance.

Look elsewhere when…

The part needs to function, not just look right. PolyJet is not a production process for functional nylon parts — that's SLS or MJF territory.
You need a durable engineering nylon. PolyJet materials are photopolymer resins, not the PA 11 / PA 12 nylon families used on our SLS and MJF lines.
The part is large. PolyJet's build tray is sized for models and prototypes, not the large-format single-piece parts SLS handles.
You need a documented dimensional tolerance for a functional fit. See the accuracy figures below — they're real, but appearance work rarely needs them checked this closely.

The process

How PolyJet actually works.

Nothing like a powder bed. PolyJet jets liquid photopolymer droplets — like an inkjet printer, but building upward — and cures each layer with UV light as it goes.

Jet the photopolymer

Print heads jet tiny droplets of liquid photopolymer resin across the tray, layer by layer — multiple materials and colours can be jetted side by side in the same pass.

Cure with UV, immediately

A UV lamp on the same carriage cures each layer as soon as it's jetted, so the model is fully solid the moment the build finishes — no separate curing step.

Remove support, then finish

A gel-like support material is jetted alongside the model and washed or blasted away afterward, leaving the full-colour, multi-material part underneath.

Why full colour in one build matters. Because colour and material are placed droplet by droplet within the same pass, a single model can carry gradients, printed textures, and mixed rigid/flexible zones without painting or assembly afterward — the reason PolyJet is the appearance process on this site, not SLS or MJF. No Stratasys machine photograph and no full-colour sample photograph are available for this page yet; the process is explained in text rather than illustrated with a substitute. Sample photography is being arranged.

Materials

Rigid, flexible, and colour photopolymers — not nylon.

PolyJet's material family is photopolymer resin, cured by UV light — a different chemistry from the PA 11 / PA 12 nylon powders used on our SLS and MJF lines. Choose PolyJet for how a part looks; choose SLS or MJF for how it has to perform.

Appearance

Full colour

Colour is jetted into the model itself during the build — no painting or dyeing step needed to get a full-colour result.

Feel

Rigid & flexible

Rigid, opaque, and rubber-like flexible photopolymers can be combined within a single model, placed exactly where each property is needed.

Not this

Not nylon PA 11 / PA 12

Looking for a functional engineering nylon instead? That's SLS or MJF, not PolyJet.

A full breakdown of specific PolyJet resin grades will live on the materials page once confirmed. This page focuses on what PolyJet adds that SLS and MJF don't: full colour and mixed materials in one build.

Build size

A round tray, not a box.

Unlike our SLS and MJF machines, PolyJet's build platform is circular — quoting a rectangular X × Y × Z envelope for this process would misstate how the machine actually builds. Official figures for the current Stratasys J55 Prime tray:

Printing area

1,174 cm²

Up to 1,174 cm² (182 in²) of usable printing area on the round tray — the platform footprint, not a length-and-width box.

Print height

190 mm

190 mm print height, with 187 mm as the maximum printable height in practice.

Source: Stratasys J55 Prime brochure · stratasys.com. Figures are attributed to the J55 Prime specifically — confirmation of which model Primofort runs is tracked on pending verification.

Accuracy

Stratasys's own published accuracy figures.

As with HP's tables on the MJF page, these are manufacturer-published numbers for rigid materials on the J55 Prime — not a service-bureau estimate.

Confidence band	Under 100 mm	Above 100 mm
1σOne standard deviation	±150 µm	±0.15%
2σTwo standard deviations	±180 µm	±0.2%

Figures are for rigid materials on the Stratasys J55 Prime, as published in Stratasys's own J55 Prime documentation. Accuracy for a specific part depends on geometry, material, and orientation — confirmed at quote.

Source: Stratasys J55 Prime brochure · stratasys.com.

Proof, not promises

Not a broker. Our own PolyJet line.

These photographs were taken on our production floor in Dongguan — the same floor that runs our SLS and MJF lines. No Stratasys machine photograph and no full-colour sample photograph are available for this page yet — we show the floor context instead of substituting another brand's machine or someone else's colour parts. Sample photography is being arranged.

Primofort production floor — Dongguan

Climate monitoring on the production floor

28.0 °C · 40.2 %RH — monitored floor climate

Machines on our floor

HP Stratasys

Primofort · 元城科技 — Room 303, Building 3, Huakecheng, Guanchang Rd, Dongcheng, Dongguan, Guangdong 523128, China

Get a quote

An engineer replies within 24 hours.

Real engineer, real quote. Not an auto-mailer — a person who has read your requirements and looked at your part.
Your IP stays yours. We send a secure link for CAD files; nothing is shared outside the project team. NDA on request.
We will tell you if PolyJet is wrong for your part. If your part needs to function rather than just look right, we would rather point you to SLS or MJF at quote than after you have paid.

Prefer direct? service@primofort.com · +86 158 9991 6661 (WhatsApp)

Full colour. Multiple materials.One single build.