A handheld laser welder joins metal with a focused beam and a hand-guided torch. Compared with TIG or MIG, it usually welds faster, with less heat distortion and less grinding afterward. Machines differ a lot in power, cooling and features, though, so the right choice depends on your work. This guide covers what to check.
What a handheld laser welder is
A fiber laser sends its beam through a flexible cable to a compact torch. The operator points the torch at the joint, and the beam melts the edges so they fuse into a strong, clean seam. It suits stainless steel, aluminum, carbon steel and other metals, and it is much more portable than a bulky welding rig. For a closer look at the materials, see our comparison with MIG welding.
Why people move away from older methods
TIG and MIG work, but each has drawbacks on thin metal and detailed parts:
- The process is slower and labor costs more.
- Weld marks often need grinding or polishing.
- More heat means more distortion, especially on thin metal.
- Tight corners and complex shapes are harder to reach.
A laser concentrates its heat in a small area, so it welds faster with less warping and a neater finish. On thin material, that can cut finishing work a lot.
What to look at when you choose
Laser power
Match power to the metals and thicknesses you weld. Higher power welds thicker material, and lower power is enough for thin sheet. Ascent handheld welders range from 900W to 3000W. The product pages list the maximum thickness for each metal at each power, so check them against your jobs.
Cooling
Cooling decides how long the welder can run and how it handles heat in the shop. The Ascent refrigeration laser welders use a refrigerant heat pump with two circuits and no water. They are rated for a 100% duty cycle, so they can weld continuously, and they operate in ambient temperatures from -20°C to +60°C (-4°F to +140°F). The STR Series reaches from -30°C to +60°C.
Weight and comfort
You hold the torch for hours. The Ascent torch weighs 1.32 lb (600 g). Compare the weight and balance, because power and build quality do not tell you whether an operator can work comfortably through a full shift.
Wire feeding
A wire feeder lets you fill gaps and build up joints. The Ascent welders have an automatic wire feeder that runs a single wire or two wires, so you can change materials quickly.
Controls
Simple controls shorten training. The Ascent welders use a three-knob control, and settings can be saved in an Android app.
Safety
A handheld laser welder is a Class 4 laser. Wear a laser helmet or laser safety glasses, and use welding gloves. Minimum OD 5; prefer OD 7 or 8. Enclose the work area with laser-rated partitions and ventilate the fumes. See our laser safety page.
Service and training
Ask who installs the machine, how operators are trained and who supports it afterward. Ascent technicians train your operators in 3-4 hours, and installation and training at your facility are included in the price. Support comes from Buffalo, Toronto and Kentucky. The handheld welders have a 2-year warranty.
Laser, TIG and MIG compared
| Feature | Laser welding | TIG welding | MIG welding |
|---|---|---|---|
| Speed | Fast on thin metal | Moderate | Moderate |
| Finish | Smooth, little cleanup | More grinding may be needed | Spatter and weld marks |
| Heat distortion | Low | Moderate | Higher |
| Thin metals | Well suited | Tricky | Risk of damage |
| Learning curve | Simple controls, short training | Takes skill | Takes skill |
Things to keep in mind
- A laser welder costs more up front than older tools.
- Operators need training.
- You need protective gear, shielding gas and ventilation.
For shops that weld often, the savings in time and finishing can offset those costs.
Questions and answers
Can a handheld laser welder weld aluminum?
Yes. It puts little heat into the part, which helps keep thin aluminum from warping. See our guide to preventing warping in aluminum.
How does it compare with TIG?
It is usually faster, leaves a cleaner joint and distorts the part less, which reduces polishing.
Can I weld stainless steel with it?
Yes. A laser welds stainless steel with a clean, strong joint.
What power levels are available?
Ascent handheld models range from 900W to 3000W. Pick one by the thickness and metal you weld.
What does a handheld laser welder cost?
Contact us for a quote. For the 2000W and 3000W welders, the price covers shipping, installation and training at your facility.
To see which model suits your shop, visit Ascent Lasers Pro or the hand-held laser welder page.
