Atomstack
Atomstack X40 Pro
$949
Released 2023
Best Laser Engravers · head-to-head
Atomstack X40 Pro vs LONGER Laser B1 40W
A sourced, side-by-side comparison. LONGER Laser B1 40W is cheaper at $789.99. Every spec and price links to its source.
LONGER
LONGER Laser B1 40W
$789.99Cheaper
Released 2023
Which is better: the Atomstack X40 Pro or LONGER Laser B1 40W?
The LONGER Laser B1 40W wins 1 of the 1 specs we compare head to head; the other wins 0. The LONGER Laser B1 40W is the cheaper at $789.99. The LONGER Laser B1 40W both leads on specs and costs less — the straightforward pick.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Atomstack X40 Pro | LONGER Laser B1 40W |
|---|---|---|
| US price | $949 | $789.99 Basic Set MSRP at longer3d.com |
| Brand | Atomstack | LONGER |
| Released | 2023 | 2023 |
| Laser type | diode | diode |
| Power (W) | 48 | 44 |
| Wavelength (nm) | 455 | 450 |
| Work area (mm) | 400×400 | 450×440 |
| Max speed (mm/s) | 500 | 600 |
| Min engraving accuracy (mm) | 0.01 | 0.1 |
| Connectivity options | USB | Wi-Fi, USB, TF Card |
| Software compatibility | LaserGRBL, LightBurn | LaserGRBL, LightBurn |
| Enclosed design | No | No |
| Weight (kg) | 12 | 8.5 |
| Material compatibility | wood, acrylic, metal, leather, stone, MDF | wood, acrylic, leather, metal, glass, paper, cloth |
| Autofocus | No | Yes |
Sources — Atomstack X40 Pro: atomstackshop.com (verified 2026-06-26). LONGER Laser B1 40W: longer3d.com (verified 2026-06-26).
What's the difference between the Atomstack X40 Pro and LONGER Laser B1 40W?
Where the two actually differ on the specs we track (9 of 12). Matching specs are omitted.
- Power (W): Atomstack X40 Pro 48 vs LONGER Laser B1 40W 44
- Wavelength (nm): Atomstack X40 Pro 455 vs LONGER Laser B1 40W 450
- Work area (mm): Atomstack X40 Pro 400×400 vs LONGER Laser B1 40W 450×440
- Max speed (mm/s): Atomstack X40 Pro 500 vs LONGER Laser B1 40W 600
- Min engraving accuracy (mm): Atomstack X40 Pro 0.01 vs LONGER Laser B1 40W 0.1
- Connectivity options: Atomstack X40 Pro USB vs LONGER Laser B1 40W Wi-Fi, USB, TF Card
- Weight (kg): Atomstack X40 Pro 12 vs LONGER Laser B1 40W 8.5
- Material compatibility: Atomstack X40 Pro wood, acrylic, metal, leather, stone, MDF vs LONGER Laser B1 40W wood, acrylic, leather, metal, glass, paper, cloth
- Autofocus: Atomstack X40 Pro false vs LONGER Laser B1 40W true