Genmitsu L8 40W vs Glowforge Spark
| Laser | ||
| Type | Diode Laser | Diode Laser |
| Wavelength | 455 nm | 455 nm |
| Optical Power | 40 W | 6 W |
| Performance | ||
| Work Area | 390 × 390 mm | 203 × 305 mm |
| Max Speed | 40,000 mm/min | 8,000 mm/min |
| Focus | Manual | Autofocus |
| Features | ||
| Enclosure | Yes | Yes |
| Air Assist | Yes | No |
| Rotary Compatible | Yes | No |
| WiFi | Yes | Yes |
| Camera | Yes | Yes |
| Physical | ||
| Approx. Price | $999 | $899 |
| Release Year | 2023 | 2024 |
| Weight | 12 kg | 4.9 kg |
Pros & Cons
Genmitsu L8 40W
What we like
- Complete all-in-one: enclosure, air assist, LightBurn camera all included
- Class 1 safety — no goggles required during enclosed operation
- 40W cuts 15mm basswood in one pass
- LightBurn compatible (industry-standard software)
- Strong SainSmart community support and documentation
Watch out for
- Heavier and less portable than open-frame alternatives
- Manual focus — no auto-focus
- Acrylic enclosure less durable than metal-framed options
- Higher price than comparable open-frame diode machines
Glowforge Spark
What we like
- Easiest laser to get started with — ~30-minute setup
- Free Glowforge Print software works on any device (Mac, PC, tablet, phone)
- Built-in camera with live preview for material placement
- Class 1 enclosed — safe for home and classroom use
- Wide material library with auto-detected settings
Watch out for
- Cloud-dependent — requires internet for every job
- Small 203×305mm cutting area for the price
- Only 6W — limited cut depth and no thick stock
- Subscription costs for premium design catalogue
- Not compatible with LightBurn
Compatible Materials
Genmitsu L8 40W
WoodAcrylicLeatherCardboardFabricPaperRubberStone
Glowforge Spark
WoodLeatherAcrylicCardboardFabricPaperRubber
The Glowforge Spark costs $899 (10% less) than the Genmitsu L8 40W, which is priced at $999.
The Genmitsu L8 40W has 85% more optical power (40W vs 6W).
The Genmitsu L8 40W offers a 59% larger work area (390 × 390 mm vs 203 × 305 mm).
The Genmitsu L8 40W has a 80% higher maximum speed (40,000 mm/min vs 8,000 mm/min).
Feature-wise, Genmitsu L8 40W includes air assist, while Glowforge Spark does not; Genmitsu L8 40W includes rotary attachment compatibility, while Glowforge Spark does not.