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With every system
- On-site install + training Setup, laser calibration, and operator training by a factory-trained technician
- 2-year warranty + US spares Warranty includes the laser, backed by US-based parts inventory
3D printers, Business 3D Printers, Dental 3D Printers, Engineering 3D Printers, Manufacturing 3D Printers, Medical 3D Printers, Resin 3D printers, SLA 3D Printers · SLA
Kings 850Pro Industrial SLA 3D Printer – Marble Chassis | 33×33×20 in / 850×850×500 mm
Large-format industrial SLA. Marble frame. Vacuum recoating. Built for automotive panels, one-piece patterns, dental models, and architectural forms — without stitching or Z-seam artifacts.
- ✓ 33×33×20 in / 850×850×500 mm build chamber — a full fascia pattern or a batch of shoe lasts in one run
- ✓ Solid-state 355 nm Nd:YVO4 laser · 0.075–0.8 mm variable beam · 15.0 m/s max scan
- ✓ Full-marble machine frame — thermal stability for ±0.1 mm part accuracy
- ✓ Lead time: 2–3 months — on-site install, calibration & operator training included
Price held 7 days after order.
Install + training included
2-yr warranty incl. laser
What your process engineer actually checks
Large parts in one build
The 33×33×20 in / 850×850×500 mm envelope prints a full fascia pattern, a one-piece mold, or a batch of shoe lasts in a single run — no mid-build stitching, no glued seams to sand out. Most mid-range industrial SLA caps XY at 250–450 mm.
Marble frame, measured accuracy
Recoater frame, elevator holder, and scan base are solid marble for thermal stability and vibration damping across the full 850 mm bed. Part accuracy holds ±0.1 mm under 150 mm and ±0.1%×L above — a fixed structural spec, not a calibration claim. 355 nm solid-state laser, 0.0005 mm vertical resolution.
An applications engineer on the line
Resin selection, print-profile setup, post-cure protocol — answered by engineers who work with these machines, not a remote ticket queue. Sub-24h response, NDA standard.
33×33×20 in / 850×850×500 mm
Build volume
355 nm
Solid-state Nd:YVO4 UV laser
15.0 m/s
Max scan speed
0.05–0.25 mm
Layer thickness
±0.1 mm
Part accuracy (L≤150 mm)
About this product
Kings 850Pro is a large-format industrial SLA 3D printer — an 33×33×20 in / 850×850×500 mm build chamber on a full-marble frame with vacuum recoating — built to print full automotive panels, one-piece patterns and molds, architectural sections and batches of footwear lasts in a single run, without mid-build stitching or Z-seam artifacts.
Why teams specify the 850Pro
The four things a production engineer checks before committing a large-format SLA platform.
Large parts in one build
The 33×33×20 in / 850×850×500 mm envelope prints a full fascia pattern, a one-piece mold or a batch of shoe lasts in a single run — no stitching, no glued seams to sand out. Most mid-range industrial SLA caps XY at 250–450 mm.
Full-marble frame, measured accuracy
Marble across the recoater frame, elevator holder and scan base damps vibration and holds temperature — part accuracy holds ±0.1 mm under 150 mm, ±0.1%×L above, over the whole 850 mm bed.
Solid-state 355 nm laser, variable beam
An Nd:YVO4 355 nm UV laser with a 0.075–0.8 mm variable beam narrows for detail and widens for fast flood-fill in the same job — scanning to 15.0 m/s across the large bed.
Intelligent vacuum recoating
Position-aware vacuum recoating lays a uniform resin film with no blade contact on the part surface — consistent layers across a full 850 mm span regardless of geometry.
How Additive Plus delivers your 850Pro
Configured to your resins, installed and calibrated on-site, printing on day one.
Step 01
Configure resin & profile
We match the qualified resin family — ABS-like, durable, high-toughness, rubber-like or clear — to your parts. Parameters are preset at the machine level.
Step 02
Install, calibrate & train
A factory-trained technician handles setup, laser calibration and operator training on-site in the US — not a drop-ship.
Step 03
Benchmark before you commit
Send your hardest geometry and target resin — we print a benchmark part on industrial SLA so you judge surface finish and accuracy in hand.
Qualified resin library
| Resin | Type | Typical use |
|---|---|---|
| KS908C | ABS-like | General engineering, functional prototypes |
| KS408A | Durable ABS | Snap-fit assemblies, jigs and fixtures |
| KS608C | High-toughness | Drop-test and impact-resistant parts |
| KS198S | Rubber-like (flexible) | Gaskets, soft grips, wearables |
| KS168C / KS158T | Clear / UV-clear | Optics mock-ups, fluid-flow housings |
Print parameters are preset for standard resins — no open-parameter development required. Ask our applications team about biocompatible and castable options for the 850Pro platform. See the full specification table below.
Typical applications
Where the 850Pro’s large bed removes the split-and-bond step.
Automotive
Fascia & bumper patterns, interior trim, HVAC ducts
Footwear
Batches of full lasts and midsole cavities per build
Architecture
Large 1:50 building sections without assembly joints
Industrial patterns & molds
Casting patterns, vacuum-form and layup tooling
Animation & sculpture
Near-full-scale character busts and prop patterns
Jigs & fixtures
Durable-ABS tooling and assembly aids at scale
Kings 850Pro on the production floor
Not sure the 850Pro is the right size?
Same industrial SLA platform and marble-frame accuracy, different build envelopes.
One size downKings 650ProView printer →
One size upKings 1000ProView printer →
Longer bedKings 1450ProView printer →
One size upKings 1000ProView printer →
Longer bedKings 1450ProView printer →
Tell us your largest part and target resin — an applications engineer will confirm the 850Pro fits or point you to the right size in the Kings SLA range. Sub-4h reply, NDA standard.
Why source the Kings 850Pro through Additive Plus
- Authorized US representative for Kings3D — US-based sales, spare-parts inventory, warranty coverage and direct factory escalation. No grey-market lead times.
- Factory-trained applications engineers — resin parameter review, print-profile setup and post-cure protocol development, answered by engineers who have run the machine.
- Hands-on SLA experience — our in-house 3D printing service runs industrial SLA for client parts, so support comes with first-hand knowledge of photopolymer failure modes.
- Install, calibration and on-site training included — dialed and printing on day one, not a drop-ship.
- 2-year warranty including the laser — manufacturer-backed, supported through Additive Plus. Leasing and financing available; sub-24h response.
| Brand | Kings3D |
| Build Volume | 33x33x20 in / 850x850x500 mm |
| Rated Power Consumption | 1.5KVA |
| Technology | SLA |
| Laser Type | Solid-state frequency tripled Nd: YV04 |
| Wavelength | 0.000014in 355nm |
| Resin Surface Power | ≥300 mW |
| Scanning Mode | Germanic galvanometer scanner |
| Variable Beam System | Galvo/Closed-loop |
| Beam Size | 0.003-0.03in 0.075-0.8mm(Variable Beam) |
| Max Scanning Speed | 15.0m/s |
| Motion Control System | Closed-loop |
| Machine Control Software | KINGS 3D control software |
| lnput Data File Format | STL/SLC |
| Operating System | Windows 7/10 |
| Network Type and Protocol | Ethernet，TCP/IP |
| Electrical Requirement | 200-240VAC 50/6OHz, single-phase,10A |
| Ambient Temperature | 20-26C(72-79F) |
| Relative Humidity | ＜40%，non-condensing |
| First Tank Resin | About 529lb 240kg |
| Main Sturcture | Marble recoater frame, marble elevator holder and marble scanning system base |
| Coating Mode | Intelligent position vacuum recoating |
| Vertical Resolution Ratio | 0.00002in 0.0005mm |
| Repeat Positioning Accuracy | ±0.004in ±0.01mm |
| Accuracy | L≤5.9in, ±0.004in L≤150mm, ±0.1mm L＞5.9in, ±0.004%*L L＞150mm, ±0.1%*L |
| Printing Materials | Resins |
Product videos
Print a benchmark part before you buy
Send your STL We print it in-houseYou evaluate the real part
Send us your hardest geometry. We print it on an industrial SLA system in your target resin and ship you the part — so you evaluate surface finish and accuracy in hand, not from a spec sheet.
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From teams running the Kings 850Pro
Unedited feedback from automotive, footwear, and engineering shops.
★★★★★
We print full fascia patterns in one piece now — no more splitting a panel and bonding the halves. Surface off the marble frame is consistent enough that our finishers barely touch it.
DR
Daniel R. Prototyping Lead · Automotive design studio
★★★★★
Accuracy holds across the whole 850 mm bed. We measured a full-arch batch and everything came in inside ±0.1 mm. The vacuum recoater means no witness lines on flat surfaces.
PN
Priya N. Dental Lab Manager · Full-service dental lab
★★★★★
Install and calibration were done in a day and the machine was printing production parts by the afternoon. Having engineers who actually run SLA answer the phone made qualification quick.
MT
Marcus T. Additive Manufacturing Engineer · Automotive tier-1 supplier
Common questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
What build volume does the Kings 850Pro offer?
The Kings 850Pro prints at 850×850×500 mm (33×33×20 in) — a large square envelope that fits a full automotive fascia panel, a batch of shoe lasts, or a one-piece pattern without mid-build stitching or Z-seam artifacts.
Which resins are qualified for the Kings 850Pro?
Kings3D qualifies ABS-like (KS908C), durable ABS (KS408A), high-toughness (KS608C), rubber-like (KS198S), and clear (KS168C, KS158T) resins. Biocompatible and castable options are available — contact our team for the current validated list.
What does installation include, and what is the lead time?
Lead time is typically 2–3 months from order placement. Installation includes on-site setup, laser calibration, resin loading, and operator training by a factory-trained technician. Service and maintenance contracts are available.
Can I test the Kings 850Pro before committing?
Yes. Send your part files and our in-house 3D printing service will print samples in the resin of your choice, so you can evaluate surface finish and accuracy on a real part before you commit. For qualified buyers we can also arrange an on-site demo or a live print review of the Kings 850Pro before purchase.
What layer thickness and surface finish does the Kings 850Pro produce?
The Kings 850Pro prints at 0.05–0.25 mm layer thickness with 0.0005 mm vertical resolution. Its intelligent-position vacuum recoater lays a uniform resin film with no blade contact against the part, so flat surfaces come off the machine without witness lines or Z-seam artifacts. Surface finish is smooth enough that most patterns, models, and lasts need only light hand-finishing before use or moldmaking.
Why does the Kings 850Pro use a marble frame?
The Kings 850Pro's recoater frame, elevator holder, and scanning-system base are solid marble. Across a large 850 mm bed, marble's thermal stability and vibration damping keep the optical path and build platform aligned through long jobs, which is what holds part accuracy at ±0.1 mm for features under 150 mm and ±0.1%×L above that. It is a structural property of the machine, not a calibration setting that drifts between builds.
What post-processing does the Kings 850Pro require, and does Additive Plus supply it?
Parts printed on the Kings 850Pro are drained, washed to remove uncured resin, then UV post-cured to reach full mechanical properties. Large-format builds need a wash tank and cure chamber sized to the part — a desktop cure box will not fit an 850 mm panel. Additive Plus can spec and supply matched wash-and-cure equipment with the machine, and our engineers will set the post-cure protocol for each qualified resin.
Place your order, or talk to an engineer first
Order Kings 850Pro Industrial SLA 3D Printer – Marble Chassis | 33×33×20 in / 850×850×500 mm direct, or talk to materials engineer