Atomstack A20 Pro V2 vs Sculpfun S9
Technical comparison · Diode laser (405–460 nm)
The two machines do not work at the same scale: 20 W optical declared on the Atomstack against 5.5 W on the Sculpfun. The first also suits cutting panels, the second is mainly for engraving, and it costs about €190 less.
| Parameter | ||
|---|---|---|
| Identity | ||
| Launch year | 2024 | 2021 |
| Use tier | F2 — Intermediate | F2 — Intermediate |
| Price | ||
| Price (€) | ~300–600 € | 259 € |
| Universal specs | ||
| Dimensions (W×D×H) (cm) | — | 57 × 60 × 27 cm |
| Weight (kg) | 6 kg | 3 kg |
| Work area (mm) | 400 × 365 mm | 410 × 415 mm |
| Power (W) | 120 W | 30 W |
| Maximum speed | 400 mm/s | — |
| Declared precision | 0.02 mm | 0.01 mm |
| Category specs | ||
| Work area (short side) (mm) | 365 mm | 410 mm |
| Rated power (W) | 20 W | 5.5 W |
| Source technology | Diode | Diode |
| Max travel speed (mm/s) | 400 mm/s | — |
| Max processing speed (mm/s) | 400 mm/s | — |
| Max cut depth per material | — | Wood: 15mm, Acrylic: 10mm |
| Wavelength (nm) | 455 nm | 450 nm |
| Min resolution (µm) | — | 10 µm |
| Autofocus | No | No |
| Rotary included/compatible | No | No |
| Passthrough | No | — |
| Supported software | Proprietary, LightBurn, Other | LightBurn, Other |
| Frame | Open, optional enclosure | — |
| Air assist | Optional | Optional |
| Fume extraction | Optional filter | — |
| Ecosystem | ||
| Cloud dependency | No | No |
| Software notes | The software compatibility of the device is extensive and aligns with the industrial standards of the maker sector. It natively supports both LaserGRBL, a free and open-source option suitable for basic engraving operations, and LightBurn, the most popular paid professional platform for advanced management of layers, cutting parameters, and complex vector formats. Control can be managed directly via a wired USB connection from a computer or in offline mode, using memory cards to load processing files. The machine responds to standard G-code commands, allowing experienced users fine customization of acceleration and speed parameters through the configuration of the internal firmware, without constraints linked to proprietary and closed-source cloud ecosystems. | Fully compatible with LightBurn and LaserGRBL (Windows only), operating via standard GRBL firmware without proprietary restrictions. |
The differences that matter
- 20 W against 5.5 W optical power (values declared by the manufacturer) → on cuts the Atomstack needs fewer passes; with the Sculpfun it is better to stay on engraving and thin materials.
- About €450 against €259 → the Sculpfun costs about €190 less.
- Work area 400 × 365 mm against 410 × 415 mm → 50 mm more on one side for the Sculpfun, useful for deeper panels.
- Both work with LightBurn; the Atomstack also reads files from a memory card and has proprietary software → you can work without a computer attached.
Which one to choose
Choose A20 Pro V2 if…
you cut shapes in plywood or acrylic and engrave in batches, and you want to work without a computer attached by loading files from a memory card. You accept a higher price and a shorter bed on the Y axis.
Choose S9 if…
you engrave wood, leather or tags on a large bed and want to enter diode lasers on a tight budget. The trade-off is power: at 5.5 W a cut takes more passes, and on thick materials the machine reaches its limit sooner.
Where to buy
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