ComMarker · fiber laser · research record
B4 20W
B4 20W: 20 W 1064 nm fiber, 110 × 110 mm work area.
Decision summary
Where it fits—and where it doesn’t.
Strengths
- B4 20W: 20 W 1064 nm fiber, 110 × 110 mm work area.
Limitations
- Extraction is required. Verify the exact material, guarding and fire precautions; never leave a laser unattended.

Reference configuration: 20 W · 110 × 110 mm · US/USD. Checked 2026-10-12; taxes, shipping and stock require seller confirmation.
Specification sheet
Verified core specifications
| Laser output | 20 W 1064 nm fiber |
|---|---|
| Work area | 110 mm × 110 mm |
| Fully enclosed | No |
| Camera | Not verified |
| Autofocus | No |
| Rotary support | Yes |
| Materials | stainless steel, aluminum, brass |
Installed workflow
What the machine price leaves out
Setup allowance
$300–$1,500 beyond the machine reference price.
Planning allowance for exhaust, filtration, fire safety and common accessories; excludes shipping and tax.
Common accessories
- Outdoor exhaust or rated filtration
- Air assist where not included
- Fire-safe work surface
- Material test pieces
- Rotary attachment for cylindrical work
Software and platforms
LightBurn, EZCAD2
Platforms: Windows, macOS (LightBurn)
Safety and installation
Ventilation: required
- Provide effective fume extraction
- Never leave a laser job unattended
- Verify material composition before processing
- Keep appropriate fire-control equipment nearby
Warranty check
Terms vary by seller and market; confirm laser-source, tube and consumable coverage separately.
Production fit
hobby, small-batch
Validate duty cycle and throughput with your own material before commercial reliance.
Narrow your shortlist
Compare the trade-offs
ComMarker B4 20W vs ComMarker B6 MOPA 20W vs Monport GA 30W MOPA
ComMarker B4 20W vs ComMarker B6 MOPA 20W vs Monport GA 30W MOPA: compare work area, software, dated configurations and setup requirements.
ComMarker B4 20W vs LaserPecker LP5
ComMarker B4 20W vs LaserPecker LP5: compare work area, software, dated configurations and setup requirements.
Market check
Buying options
Evidence log
Sources
- ComMarker B4 20W: specifications and reference configurationofficial · checked 2026-10-12
- B4 manual: focusing and lens configurationsofficial · checked 2026-10-12
- TechRadar B4 review; check the tested power and lensindependent · checked 2026-10-12
Same process
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