Four operating modes on one 4-in-one laser control system, using the same gun: weld, cut, weld seam clean and rust clean. You select the mode on the HMI rather than changing equipment. In practice that means one operator can strip rust off a joint, weld it, and clean the oxide discolouration off the finished seam without putting the gun down – work that would otherwise involve a grinder, a welder and a flap disc or pickling paste.

On thin to medium gauge sheet and stainless steel, a correctly set laser weld is typically narrower, lower-distortion and faster than the equivalent TIG weld, with the wobble widening the melt pool for a more forgiving seam. The dual wire-feeder extends its range on wider gaps and thicker joints. For very thick sections and heavy structural plate, conventional arc processes are generally still the better fit – this machine is built for sheet metal, stainless fabrication and precision joints.

Choose against the thickest joint you weld regularly, not your average one. Broadly, 1500 W suits thin gauge and light stainless work such as railing and decorative fabrication, 2000 W is the general-purpose middle for mixed sheet metal and stainless fabrication, and 3000 W is for thicker sections, wider gaps needing more penetration and higher-duty continuous production. All three run the same four modes and the same wobble range. Exact thickness depends on grade, joint design and fit-up, so send us your joints for a specific recommendation.

A bare laser spot is very small, so a slight wander off the joint line means the beam misses an edge. The single-axis wobble oscillates the spot into a line adjustable from 0 to 5 mm, widening the melt pool so it covers both edges even when the gun is not perfectly steady. That gives a smoother, wider bead, better tolerance of imperfect alignment and a much shorter learning curve. Set it near zero for fine precise work and wider for general fabrication.

It depends entirely on your fit-up. Laser welding without filler works when the two edges actually touch, so if your parts are laser-cut and meet tightly, the standard gun covers it. Where there are visible gaps – repair work, retrofit, site fabrication, hand-cut edges – the wire-feeder adds filler to bridge the gap, build up the joint and give deeper penetration on thicker sections. It is more economical specified with the original order than retrofitted later, so decide before you sign.

Stainless steel and mild or carbon steel are where it is strongest, and they cover most of the work it is bought for. Aluminium welds well but is reflective at the fiber wavelength and needs correctly rated parameters. Brass and copper are highly reflective and should be discussed before you specify the machine – tell us at the inquiry stage if they are part of your regular work so we can confirm the right configuration.

Much less than TIG, but not none. The HMI carries pre-set parameters for material and thickness, and the wobble makes the weld forgiving of small hand movements, so an operator who is not a time-served welder produces usable welds far sooner than with a torch. What still matters is consistent travel speed and gun angle, plus safe handling of a handheld beam. We train your operators on all four modes and on safe working during commissioning.

Wavelength-rated eye protection for the operator and anyone else in the working area is mandatory – a laser reflection off a stainless surface travels, so this is not only about the person holding the gun. Work from a defined position rather than wherever the part happens to sit, keep the gun’s interlocks and safety switch functional and never bypassed, and run fume extraction sized for what you are welding and cleaning. We cover the full safety setup during installation.

Minimal compared with arc welding. The main one is the protective lens on the gun, replaced on schedule or when it degrades visibly. Beyond that: shielding gas, filler wire if the dual wire-feeder is fitted, and periodic nozzle and gas diffuser checks. There are no electrodes or contact tips to burn through. The water cooling system needs its level, flow and condition checked regularly, particularly before continuous running.

Price depends on the power tier and whether the dual wire-feeder is included – a 1500 W standard gun and a 3000 W machine with the wire-feeder sit at different points in the range. We quote against a confirmed specification rather than publishing a fixed figure, because the right tier depends on your joints. Send your material, thickness, joint types and an idea of your fit-up for a detailed quotation, and mention if you need multi-machine pricing.

A 1-year warranty covering manufacturing defects in the laser source and delivery system, control electronics and the gun, handled directly by Sigma Mechotronics Pvt. Ltd. rather than through an agent or overseas supplier. Installation and commissioning at your premises, HMI parameter setting for your material and joints, and operator training on all four modes are part of the supply, and spares including protective lenses are held in India. Every purchase comes with a GST tax invoice under your GSTIN.

Yes, and on this machine we recommend it, because weld appearance and how forgiving the gun feels are things you judge by seeing them rather than reading a specification. Bring your actual material and, if you can, a typical joint with your normal fit-up – that is what shows whether you need the wire-feeder. Facility visits to our Ahmedabad plant are welcome by appointment.