Primofort is the floor in Dongguan where it stops being powder. Industrial SLS, HP Multi Jet Fusion and full-colour PolyJet under one roof — send your CAD and an engineer quotes it within 24 hours.
No moulds, no tooling, no minimum. A laser draws your cross-section into a bed of hot nylon, the bed drops, fresh powder sweeps over, and it draws the next one. Repeat until the part exists.
The chamber is filled with nylon powder and brought close to its melting point, so the laser only has to add the last few degrees.
A blade sweeps a fresh layer across the bed — thin, flat and even. Every layer of your part begins here.
The laser traces this slice of your CAD and the powder sinters solid. Unfused powder stays where it is and supports the part — which is why SLS needs no support structures.
The finished cake cools in a controlled cycle. Rushing this warps parts, so it is not rushed.
Parts are dug out of the cake and blasted clean. Loose powder is sieved and blended back into the next build — up to 80% reuse.
Vapor smoothing for a sealed, injection-like surface; dyeing, sanding and threaded inserts as needed. Finishing options →
The table most bureaus bury behind a contact form. If you are pricing three vendors this week, start here.
| Process | Materials | Max build size | Typical tolerance | Best for |
|---|---|---|---|---|
| SLSSelective laser sintering | Nylon 11 · Nylon 12 · glass-filled · carbon-fibre Nylon 6 | up to 910 × 430 × 400 mmCONFIRM | ±0.3% typical* | Functional prototypes, end-use parts, large formats, living hinges |
| MJFHP Multi Jet Fusion | PA 12, HP-certified | 380 × 284 × 380 mm | HP-published tables* | Production batches, fine detail, consistent mechanicals |
| PolyJetStratasys J-series | Full-colour multi-material resin | 1,174 cm² tray × 190 mm H | ±0.15% (1σ, rigid) | Full-colour models, medical and consumer look-like prototypesCONFIRM |
Tensile, modulus, elongation, heat deflection — the numbers most bureaus hide behind "contact us for specs". Three of them are worth knowing before you choose.
Single-piece SLS parts most bureaus would have to cut and bond. Housings, ducts, full-scale rigs — printed whole.
Bright-white, biocompatible nylon that opens up wearables and medical models — rare at production scale.
FS-YC6130CF carbon-fibre Nylon 6 — 10 GPa stiffness, in metal-replacement territory at nylon weight.
| Material | Type | Tensile | Modulus | Elong. | HDT | Build size (mm) |
|---|---|---|---|---|---|---|
| Formlabs FYC110 | Nylon 11 | 49 MPa | 1.6 GPa | 40% | 182 °C | 160×160×300 |
| Formlabs FYC120 | Nylon 12 | 50 MPa | 1.85 GPa | 12% | 171 °C | 160×160×300 |
| Formlabs FYC120GF | Nylon 12 + GF | 38 MPa | 2.8 GPa | 7% | 170 °C | 160×160×300 |
| FS-YC3201 | Tough Nylon 12 | 42 MPa | 1.45 GPa | 20% | 145 °C | 910×430×400C |
| FS-YC220GF | Nylon 12 + fibre | 38 MPa | 2.35 GPa | 7% | 170 °C | 375×375×500 |
| YP120 | White PA 12 · biocompatible | 46 MPa | 1.84 GPa | 13% | 180 °C | 420×420×450 |
| YP120GF | Grey PA 12 + fibre | 41.7 MPa | 2.3 GPa | 6.8% | 168 °C | 420×420×450 |
| FS-YC6140GF | Nylon 6 + fibre | 70 MPa | 6.0 GPa | 1.2% | 200 °C | 420×350×350 |
| FS-YC6130CF | Nylon 6 + carbon fibre | 110 MPa | 10.0 GPa | 2.5% | 214 °C | 420×350×350 |
Every frame below was shot on our own floor in Dongguan. When you send us a part, these are the machines that print it — no outsourcing chain, no middlemen.
