ComMarker B4 30W vs Gweike G2 20W
Verdict
On our scores the ComMarker B4 30W comes out ahead, 71 to 70. The ComMarker B4 30W is a 30 W galvo fiber laser with a 200 × 200 mm work area; the Gweike G2 20W is a 20 W galvo fiber laser with 150 × 150 mm. The Gweike G2 20W costs about $250 less at list price.
The ComMarker B4 30W is best for
Hobbyists and small sellers who want more depth than a 20W for metal engraving at a modest price and are happy to set focus by hand.The Gweike G2 20W is best for
Hobbyists and small sellers who mainly mark metal: tags, tools, knives and, with the optional rotary, tumblers.Specs and scores side by side
| ComMarker B4 30W | Gweike G2 20W | |
|---|---|---|
| Laser type | Galvo fiber laser | Galvo fiber laser |
| Form | Desktop galvo | Desktop galvo |
| Optical power | 30 W | 20 W |
| Work area | 200 × 200 mm | 150 × 150 mm |
| Max speed | 15000 mm/s (maker claim) | 15000 mm/s (maker claim) |
| Air assist | None | None |
| Camera | No | No |
| Autofocus | No | No |
| Safety | Open galvo marker, Class 4 per the manual, with an emergency stop button but no enclosure or interlock. One pair of safety goggles is in the box; ComMarker sells a shield ($89) and the Safety Enclosure Pro ($458 to $567) separately | Open galvo head with a clip-on tinted safety shield around the beam; no enclosure or interlock, so 1064 nm laser safety glasses are required |
| Weight | 19.5 kg | 6.5 kg |
| Price | $1,599 | $1,349 |
| Overall score | 71 | 70 |
| Power score | 76 | 70 |
| Speed score | 95 | 95 |
| Ease score | 66 | 70 |
| Safety score | 35 | 35 |
| Value score | 78 | 74 |
Frequently asked questions
Which is better, the ComMarker B4 30W or the Gweike G2 20W?
On our scores the ComMarker B4 30W comes out ahead, 71 to 70. The ComMarker B4 30W is a 30 W galvo fiber laser with a 200 × 200 mm work area; the Gweike G2 20W is a 20 W galvo fiber laser with 150 × 150 mm. The Gweike G2 20W costs about $250 less at list price.
Which is cheaper, the ComMarker B4 30W or the Gweike G2 20W?
At list price the Gweike G2 20W ($1,349) costs less than the ComMarker B4 30W ($1,599).
How we rank: by our own scores for power, speed, ease of use, safety and value, from the maker's published specs and independent tests where they exist. Some links earn us a commission (for example TwoTrees, SainSmart, Gweike and Amazon). That never changes a score or the order of a list (disclosure).