A Full-Size Dual-Laser Desktop That Does It All
The Sculpfun A9 Ultra Dual combines two independent laser systems on a single open-frame desktop machine: a 40W blue diode laser for cutting and engraving wood, acrylic, leather, and organic materials, and a 20W infrared fiber laser for metal engraving, thin metal cutting, and materials that diode lasers can't effectively process.
The result is a machine that genuinely replaces two separate setups — no need for a dedicated fiber marker alongside your diode cutter. At 400×400mm, the workspace is 16× larger than a traditional fiber marker's 100×100mm field, enabling large metal sheet work, oversized designs, and serious batch production.
Full Specifications
| Specification | Sculpfun A9 Ultra Dual |
|---|---|
| Diode Laser Power | 40W (450nm blue) — switchable to 20W |
| Fiber Laser Power | 20W (1064nm infrared fiber) New Module |
| Workspace | 400 × 400 mm |
| Max Engraving Speed | 36,000 mm/min (600 mm/s) |
| Frame Structure | U-shaped beam + industrial linear guide rails (X-axis) |
| Max Cut — Wood | 30mm basswood / plywood (diode, single pass) |
| Max Cut — Black Acrylic | 30mm (diode, single pass) |
| Metal Cutting (Fiber) | Stainless steel ≈0.3–0.4mm · Brass ≈0.4mm · Aluminum ≈0.2mm |
| Material Compatibility | 350+ materials across both lasers |
| Fiber Workspace Advantage | 400×400mm — 16× larger than standard 100×100mm fiber markers |
| Safety Features | Tilt sensor (15° auto-stop) · Flame temp sensor · Child lock · Emergency stop · Limit switches |
| Software | LightBurn · LaserGRBL |
| Connectivity | USB · Wi-Fi |
| In the Box | A9 Ultra frame · 20W fiber module · 40W diode module · Air pump · Risers · Goggles · Lens kit · Cables · Basswood & aluminium sample |
What Is the Sculpfun A9 Ultra Dual?
The Sculpfun A9 Ultra Dual is Sculpfun's most ambitious desktop laser machine to date. Building on the SF-A9 frame — already regarded as one of the best-cutting open-frame machines in its class — Sculpfun added its newly developed IR20 20W fiber laser module alongside the proven 40W diode. The result is a true dual-laser desktop that doesn't ask you to choose between cutting power and metal capability.
The machine ships as a complete kit: both laser modules are included in the box, and switching between them is a physical module swap — a quick, tool-assisted process that most users complete in under two minutes. Once installed, each module connects to the same controller, and LightBurn or LaserGRBL handles the rest.
What makes the A9 Ultra Dual stand out from competing dual-laser desktops is the genuine specification of both modules. The 40W diode is not a rebadged 20W — it uses eight independent diode chips combined optically to produce true 40W output. And the 20W fiber is not an IR diode: it's a proper fiber laser with the power density and pulse control that metal processing requires.
40W Diode Laser — Class-Leading Cutting Power
The 40W diode module on the A9 Ultra Dual is the same unit that made the SF-A9 one of the fastest-cutting open-frame laser machines ever tested. Eight diode chips are optically combined to deliver true 40W output, with a spot size precise enough for detailed engraving and powerful enough for serious single-pass cutting.
In independent testing, the SF-A9's 40W diode outperformed every competing open-frame machine — including the xTool D1 Pro 40W and xTool S1 — on 6mm plywood cutting speed, and produced less smoke staining than either competitor. The A9 Ultra Dual inherits this cutting engine unchanged.
30mm Wood — Single Pass
Cuts 30mm basswood and plywood clean in a single pass. Handles thick stock that requires multiple passes on lesser machines.
30mm Black Acrylic
Single-pass acrylic cutting at extreme thickness — ideal for signage, display stands, and custom fabrication projects.
36,000mm/min Speed
Industrial linear guide rails on the X-axis ensure smooth, vibration-free movement at max speed — resulting in finer detail and faster batch production.
40W / 20W Power Switch
Toggle between full 40W for deep cutting and 20W for more delicate engraving — direct hardware switch, no software workaround needed.
Precision Mode
Dedicated precision cutting mode tightens component tolerances for parts, inlays, and assemblies that need clean, matched edges.
Included Air Pump
Air assist ships in the box — not an optional add-on. Keeps the cut zone clear, reduces charring, and significantly improves edge quality on thick cuts.
20W Fiber Laser — Metal Power in a Desktop Form
The 20W fiber module (the IR20) is the component that elevates the A9 Ultra Dual from a powerful diode engraver into a genuinely versatile production machine. At 1064nm with true fiber-laser power density, it delivers dark, permanent markings on virtually all metals — including stainless steel, aluminum, brass, gold, silver, titanium, and platinum — without any marking spray or chemical additives.
The fiber module also adds thin-metal cutting capability: stainless steel up to 0.3–0.4mm, brass up to 0.4mm, and aluminum up to 0.2mm. This covers a wide range of jewelry blanks, custom tags, metal business cards, and decorative sheet work that would otherwise require a standalone fiber cutter costing several times more.
Cutting & Engraving Performance
Material Compatibility
40W Diode (450nm) — Engraving & Cutting
20W Fiber (1064nm) — Metal & Precision
16× the Metal Workspace — A Game Changer for Production
The 400×400mm workspace transforms what's possible with fiber-laser metal processing. Where a traditional 100×100mm marking machine forces you to reposition and re-fixture for anything larger than a business card, the A9 Ultra Dual processes full aluminum panels, large steel sheets, and multi-item batches in a single setup.
For production shops doing custom metal signage, awards, or large-format personalization work, this workspace advantage alone justifies the machine over a standard desktop fiber marker — while the included 40W diode adds non-metal capability at no extra cost.
Frame, Build Quality & Safety
The A9 Ultra Dual is built on Sculpfun's U-shaped beam frame — a significant structural upgrade over the traditional V-slot extrusion design used by most competitors. The U-beam provides greater rigidity across the full 400×400mm span, reducing flex and vibration at high speeds and contributing to the machine's best-in-class cutting accuracy at 36,000mm/min.
The X-axis uses industrial-grade linear guide rails rather than wheels running in slots. Linear rails have a far lower friction coefficient, stay aligned longer under repeated high-speed movement, and produce significantly less play or backlash over time. This directly translates to finer engraving detail, cleaner cut edges, and more consistent repeat accuracy across long production runs.
On safety, the A9 Ultra Dual includes four independent protection systems beyond the standard limit switches: a tilt sensor that cuts laser emission when the machine tips beyond 15°, a flame temperature sensor with automatic shutdown, a child safety lock, and an emergency stop switch. All four are hardware-level protections — they operate independently of the computer or software.
How Does the A9 Ultra Dual Compare?
The A9 Ultra Dual occupies a unique position: it's the only machine in this class that ships with both a 40W diode and a 20W fiber laser. The three alternatives below are all fiber-only open-frame desktops — strong machines each, but without any diode cutting capability. Here's how the key specs stack up:
| Feature | A9 Ultra Dual ★ | AtomStack A20 Pro 1064nm | AtomStack A24 Pro 1064nm | iKier K1 Pro 1064nm |
|---|---|---|---|---|
| Fiber Laser | 20W · 1064nm | 20W · 1064nm | 20W · 1064nm | 20W · 1064nm |
| Diode Laser | 40W included ✓ | ✗ Fiber only | ✗ Fiber only | ✗ Fiber only |
| Workspace | 400 × 400 mm | 400 × 400 mm | 385 × 305 mm | 410 × 410 mm |
| Max Speed | 36,000 mm/min | 24,000 mm/min | 36,000 mm/min | 54,000 mm/min ↑ |
| Laser Spot | — | 0.03 × 0.06 mm | 0.03 × 0.06 mm | 0.03 × 0.06 mm |
| Thin Metal Cut | SS 0.4mm · Brass 0.4mm | Al 0.2mm · SS thin sheet | Al 0.2mm · SS thin sheet | Al 0.2mm (1 pass) |
| Touch Screen | — | ✗ | ✗ | 4.3" touch ✓ |
| Wood Cutting | 30mm (diode, 1 pass) | ✗ (fiber only) | ✗ (fiber only) | ✗ (fiber only) |
| Price (approx.) | Check laserbuying.com | ~$999 | ~$1,059 | Check ikier.com |
| Software | LightBurn / LaserGRBL | LightBurn / AtomStack Studio | LightBurn / AtomStack Studio | LightBurn |
All four machines share the same 20W 1064nm fiber laser core and deliver comparable metal engraving quality. The key differentiators are: the iKier K1 Pro leads on raw speed (54,000mm/min) and adds a 4.3" touch screen; the AtomStack A20 Pro and A24 Pro are proven fiber-only desktops at a competitive price point; and the Sculpfun A9 Ultra Dual is the only machine that also includes a 40W diode — meaning it handles wood, acrylic, leather, and all non-metal materials that the fiber-only competitors simply cannot process. If your workflow is metal-only, any of the three are strong options. If you need to process both metals and non-metals from a single machine, the A9 Ultra Dual has no equivalent in this field.
Who Should Buy the Sculpfun A9 Ultra Dual?
Woodworkers & Sign Makers
30mm single-pass wood cutting on a 400×400mm bed covers the vast majority of sign, furniture, and decorative woodworking projects without repositioning.
Jewelers & Metal Makers
The 20W fiber engraves all precious metals with no spray. Thin metal cutting enables jewelry blanks, custom tags, and metal sheet work — all on the same desktop machine.
Small Production Shops
36,000mm/min speed and a 400×400mm work area make batch production economically viable. The dual-laser setup eliminates fixture changes between metal and non-metal orders.
Mixed-Material Artists
350+ material compatibility — from slate and ceramic to gold and platinum — in one machine. One setup for wood gifts, metal awards, leather accessories, and stone décor.
LightBurn Power Users
Full LightBurn compatibility means your existing cut profiles, camera setups, and workflow carry straight over. No proprietary software lock-in.
Makerspaces & Schools
Four hardware safety systems, included goggles, and broad material support make the A9 Ultra Dual a practical choice for shared educational and community workshop environments.
Pros & Cons
✔ Pros
- True 40W diode — best-in-class single-pass cutting at 30mm wood
- 20W fiber laser included — no separate metal machine needed
- 400×400mm workspace — 16× larger than standard fiber markers
- Industrial linear guide rails — smoother and more precise than V-slot
- Air pump included in the box
- Full LightBurn + LaserGRBL compatibility
- Four hardware safety systems standard
- 350+ material compatibility across both lasers
✖ Cons
- Open-frame design — not safe for unsupervised shared spaces
- Module swapping is physical — not instant software switching
- Desktop-only — not portable
- External fume extraction recommended for indoor use
- New product — long-term reliability data limited at launch
- Class 4 — proper eye protection and ventilation mandatory
Is the A9 Ultra Dual Right for You?
✓ Buy the A9 Ultra Dual if you…
- ✓Need both metal and wood capability on one machine
- ✓Work with thick materials — 15mm+ wood or thick acrylic
- ✓Need a large metal engraving workspace (400×400mm)
- ✓Already use LightBurn and want full compatibility
- ✓Run a fixed studio or workshop (not mobile)
- ✓Want to consolidate two machines into one
› Consider alternatives if you…
- ›Do metal-only work and want the fastest speed (→ iKier K1 Pro 1064nm at 54,000mm/min)
- ›Want a proven fiber-only machine at a lower price (→ AtomStack A20 Pro 1064nm ~$999)
- ›Prefer a slightly smaller workspace with dual-axis guides (→ AtomStack A24 Pro 1064nm ~$1,059)
- ›Only need fiber — no diode cutting (→ A9 Ultra 20W Fiber variant)
- ›Need CO₂ for clear acrylic or glass engraving (→ desktop CO₂ machine)
Browse the full selection of dual-laser and fiber laser engravers →
The Sculpfun A9 Ultra Dual is the most complete open-frame desktop laser available in 2026 — and the strongest argument yet for not buying separate diode and fiber machines.
The combination of a proven, independently-tested class-leading 40W diode and a 20W fiber laser on a single 400×400mm frame is genuinely new. Either module alone justifies the machine — together, they eliminate the need for a second dedicated setup. For woodworkers who need metal capability, jewelers who need cutting power, or production shops processing diverse material orders daily, the A9 Ultra Dual is the most practical and cost-effective dual-laser desktop on the market right now.
