Tube laser cutting: how 3D cutting works and what it can produce

At YDF in Carimate (CO), we have made bespoke metal furnishings and semi-finished products to architects' and designers' drawings since 1972. In our 3D tube laser cutting department, we process tubes and profiles for metal structures, frames, garment rails and furniture shelving. Here we explain how it works, what it can do and when it is preferable to plasma cutting, sawing and drilling. One clarification: here ‘tube laser’ means the machine for metal tubes, not the CO2 laser tube in desktop engravers.

How tube laser cutting works

1. From the file to the cutting path. The part arrives as a 3D model. The software calculates the cutting head's path and arranges the parts along the bar to reduce waste.
2. Loading and clamping. The bar is loaded and held by chucks that rotate and advance it.
3. Cutting. The beam melts the metal and an assist gas expels the molten material from the kerf. As the tube rotates, the head follows the surface on every side.
4. Unloading. The components emerge ready for bending, welding, finishing or assembly.

Compared with flat sheet metal, the challenge is the geometry: the head follows a curved or angular surface that changes as the tube rotates, and precision also depends on clamping and monitoring the tube's actual cross-section. Our department's specifications are on the page 3D tube laser cutting.

Straight and angled 3D cutting: what changes

A 2D tube laser cuts with the head always perpendicular to the surface: the cut edge is at 90° to the tube wall. In 3D tube laser cutting, the head tilts and can cut the wall at an angle. This is especially important in three cases:

• Bevel cutting. An angled edge cut prepares the joint for welding: it creates a V-shaped groove between the two components, allowing the weld bead to penetrate the full thickness. Doing this on the laser avoids subsequent grinding.
• Notches and T-joints. With straight cutting, when two thick-walled tubes intersect, their walls touch only along one edge, leaving a gap; with angled cutting, the surfaces fit together across the full thickness.
• Visible angled cuts. In frames and surrounds, the corner closes more accurately, with less filler material to rework during finishing.

The difference is small on thin walls; it becomes greater with thickness and where the joint remains visible.

What tube laser cutting can produce

Formats, materials and capacity

We work with round, square, rectangular, oval and elliptical tubes and open L- and U-profiles in aluminium, steel, stainless steel, iron, copper and brass.

Copper and brass reflect much of the laser light and dissipate considerable heat. They require dedicated parameters and, for visible components, a sample test.

The benefits of tube laser cutting

• Repeatable precision: all operations on the piece use the same file and clamping setup, without repositioning the tube between machines.
• Fewer steps: cutting, drilling, slotting and notching in a single cycle, replacing the saw, drill and milling machine.
• Faster assembly: interlocking features position the components and reduce the need for jigs and marking out.
• Better joints: bevel cutting makes surfaces fit together, so welding requires less rework — useful when the piece will then be satin-finished, burnished or polished.
• No dedicated tooling: change the part by changing the file, useful for prototypes and varying batches.

Tube laser, plasma, or saw and drilling machine?

Qualitative comparison: actual results depend on the machine, material and thickness.

In furnishings, the piece often remains visible and undergoes finishing: this usually makes tube laser cutting the most suitable choice.

From cutting to finished piece: the in-house production chain

A cut tube is still a semi-finished product. In our departments, we manage the subsequent processes through to delivery, under a single coordination:

1. Technical office. Checks the 3D file and proposes interlocking joints and bevels where needed (bespoke design development).
2. 3D tube laser cutting. Cuts, holes, slots, notches, interlocking joints and bevel cutting.
3. Tube bending and sheet metal bending. We bend tubes to fixed or variable radii and use a press brake to bend the sheet metal parts that complete the structure, such as plates and brackets (sheet metal bending).
4. Welding. TIG, MIG and MAG, as well as oxyacetylene welding and brazing, selected according to the material, thickness and visibility of the joint.
5. Finishes. Satin, burnished and distressed finishes developed in-house, gold PVD on stainless steel and the other brass finishes, from Polished to Dark Bronzed.
6. Assembly. We assemble the structure and inspect the finished components before delivery.

A YDF project: Arabesque tables in Paris

For the office centre Spaces Réaumur in Paris (2017), with a concept by D&P Associates, YDF made Arabesque conference tables with customised shapes and dimensions and laser-cut metal bases. Other projects can be found on the page Projects.

How to prepare a project for tube laser cutting

1. Send the 3D file of the piece or assembly.
2. Specify format, material and thickness of the tube and the quantities.
3. Identify the visible surfaces and the intended finish.
4. Design the joints as interlocking joints where possible and indicate those to be bevelled; if in doubt, our technical department will check.
5. For delicate finishes, request a sample on the actual tube before production.

Do you have a tubular structure to manufacture? Send us the 3D file: our technical office checks feasibility, interlocking features and bevels before quoting. If needed, we prepare a sample with the chosen finish. Request a quote.