It is a fiber laser cutting machine whose bed, gantry and cutting head are housed inside a fully enclosed cabin with a viewing window and interlocked access doors, so the beam and the cutting fume are contained by the machine housing rather than by a safety perimeter around an open bed. Sigma manufactures it from 1.5 kW to 20 kW on six standard bed sizes from 3200 x 1600 mm to 6500 x 2500 mm, and in custom bed sizes to a customer’s drawing.

No. At the same power and bed size, the two configurations cut the same materials to the same quality, because the laser source, cutting head, motion system and assist-gas system are identical. Cut quality is decided by power, assist gas, nozzle condition and parameter setting. The close type body is chosen for beam containment, fume containment and a cleaner working area – not for cutting performance.

Choose against your largest regular part, not your average one, and leave margin for clamping and nesting. As a rough guide: 3200 x 1600 mm for compact workshops and panel work, 4000 x 2000 mm as the common all-round fabrication size, 6000 x 2000 mm and 6300 x 2000 mm for long-format parts, 6500 x 2000 mm where nesting allowance on 6 metre stock is tight, and 6500 x 2500 mm only where your width requirement genuinely exceeds 2000 mm.

Yes. Sigma manufactures the close type body in customer-specified bed sizes as well as the six standard ones. A custom bed makes sense when your requirement falls between two standard sizes, when the building rather than the work sets the limit, when the machine has to fit an existing production line, or when one dominant part format would cut nesting waste on every shift. Send your part dimensions, material and thickness range, and a shop-floor drawing with clearances, and our engineering team will confirm whether a custom build is warranted or a standard bed already covers you.

Power follows the thickest material you must cut and the speed you need on your highest-volume thickness. Broadly, 1.5 kW to 3 kW suits thin and medium gauge sheet and lower-volume job work, 4 kW to 8 kW covers the general production middle across sheet and medium plate, and 10 kW to 20 kW is for thick plate and high-speed thick-section cutting at volume. Exact thickness and speed vary with material grade, assist gas and finish, so confirm your specific requirement with our applications team rather than working from a general band alone.

Yes, and this is the main practical trade-off against an open type machine. Stock has to pass through the access door rather than being craned in over an open bed, so oversized, awkwardly shaped or very heavy material can be harder to load. Check the door opening against your largest regular sheet before ordering. If a significant share of your work is oversized or crane-loaded, the open type single pallet configuration is likely the better fit.

Yes. The enclosure concentrates cutting fume and dust into a contained volume rather than eliminating it, which is exactly what makes it easier to extract from a single point. Extraction sized for your material – and particularly for coated, painted or galvanised stock, which produces significantly more fume – is part of the machine specification, not an optional accessory. We confirm the extraction requirement with you during the pre-order technical consultation.

Mild and carbon steel, stainless steel and aluminium sheet and plate are the core materials, with titanium, brass and copper also cut – the last two being highly reflective at the fiber wavelength, so a back-reflection protected cutting head should be confirmed if you run them regularly. Fiber laser is not the correct cutting technology for plastics, rubber, wood, leather or glass; for plastic sheet, a CO2 laser cutter is the right machine.

Budget for meaningfully more than the bed dimension: the enclosure footprint, clearance for the access door swing, loading and unloading space, the control cabinet, the chiller unit and the extraction ducting run. The demarcated safety zone an open bed needs is reduced, but the machine’s own service and access clearances are not. We confirm exact footprint and clearance against your shop drawing as part of the pre-order consultation, since it varies by bed size.

Price depends on laser power, bed size, whether the bed is standard or custom, and the options specified with the machine – a 1.5 kW machine on a 3200 x 1600 mm bed and a 20 kW machine on a 6500 x 2500 mm bed sit at very different points in the same range. We quote against a confirmed specification rather than publishing a fixed figure, because an incorrectly specified machine is a poor investment at any price. Send your material, thickness, part sizes and required power for a detailed quotation, and mention if you need bulk or multi-machine pricing.

A 2-year warranty covering manufacturing defects in the machine body, laser delivery system, control electronics and motion system, handled directly by Sigma rather than through an agent or overseas supplier. Installation and commissioning at your premises, parameter setting for your material and operator training are part of the supply, and spares are held in India. Every purchase comes with a GST tax invoice under your GSTIN.

Yes, and where edge quality on a specific grade or thickness is critical to your decision, we recommend it. A sample trial on your actual material and thickness is the most reliable way to confirm the machine meets your specification before committing capital. Facility visits to our Ahmedabad plant are welcome by appointment – contact us with your material, thickness and required outcome to arrange one.