Why power is not the first limit
Laser welding concentrates energy into a very small area. If the two edges do not meet, the energy passes through the gap instead of melting the metal together. Adding power in that situation only burns more; it does not make a better weld.
This is why laser-cut parts weld far more easily than parts cut by hand or plasma — the edges fit, and the energy goes where it should.
The second factor is technique. Handheld laser welding depends on the operator's travel speed and gun angle more than most people expect. On the same machine, two welders produce noticeably different weld quality.
When 2000W genuinely earns its place
| Situation | Recommendation |
|---|---|
| Thin to medium stainless, tight joints | 1500W is enough; put the money into fixturing |
| Aluminium | Higher power clearly helps — aluminium is reflective and conducts heat well |
| Thicker carbon steel, T-joints | Consider 2000W |
| Running continuously for hours daily | Higher power gives more thermal headroom |
| Inconsistent joint gaps | Prioritise wire feed and fixturing before power |
Check the power supply before deciding
A higher-power machine draws more electrical load and needs a larger chiller. Before choosing 2000W, check the three-phase supply at your workshop and where the chiller will sit. This is frequently discovered late, after the machine has arrived.
Safety is not an optional line item
Handheld laser welding requires eyewear matched to the wavelength for everyone in the area — not only the person holding the gun — along with screens or an enclosure and local fume extraction. These are needed from the first day of operation and belong in the budget from the start, not as an afterthought.
The most reliable way to decide: send us your actual part. We will weld it and send the part back for you to judge the weld yourself — on your material, with your joint.