Detectors within the laser head monitor radiation levels and will automatically shut the laser down if too much radiation is being reflected back into the lens, before any damage is done. :-) Brass and copper have reflective surfaces that can make the material difficult or impossible to cut on CO2 lasers, but a fiber laser cuts brass nicely. Laser cut and marked aluminum and silver products are widely used in windows, jewelry, solar mirrors, decorative materials. We don’t just cut rings and rectangles here…, Approval to certify to EN1090-1 up to EXC 4, Weld Preps, Chamfers & Bevels Up to 60 Degrees. At Charles Day, we have 4 x CO2 lasers, 2 x Fibre optic lasers and one of the UK’s largest waterjet cutting beds all under a single roof. Additionally, many modern laser machines have a failsafe in place to prevent damage to the cutting equipment. Other reflective metals like gold, bronze, copper and brass are also hard to laser cut using fiber lasers. Polyetherimide (PEI), EVA foam, or any other plastic/foam Emits chlorine gas Laser cutting these materials produces smoke and toxic gases that corrode the interior of the laser cutter. The inherent nature of laser cutting, there is a chance of some molten metal being present during the cutting process, some of the molten metal can also be highly reflective and become a source of a damaging reflective beam. The short answer is yes. Despite the risks of reflected beams and broken laser machines, these materials can be laser cut. With so many considerations to be taken into account, ensuring the correct set up of the laser and reflective sheet before cutting can commence, it is often a much slower form of laser cutting. Fibre lasers represent the latest development in laser cutting technology, utilising fibre optic cables as opposed to mirrors and gasses, they have become the most cost effective and quickest method of cutting thin sheets of reflective materials. For more information on our sub-contract cutting services and how Charles Day can fulfil all your reflective metal profiling needs, please contact our Sales Team with your requirements. If set up with particular care and with consistent cutting parameters, the chances of damage caused by reflection can be reduced significantly, enabling CO2 laser to be able to cut materials such as aluminium etc. We stock 260 "cartridge" brass in thicknesses ranging from 0.02" to 0.25" thick. Written by Charles Day on 22nd January 2015. Because brass cuts so well on a fiber laser, and because it is such good-looking material, this is one of our favorite materials to cut. As we explain below…. Photo: Jenoptik. Above this thickness the roughness of the cut and cutting speed deteriorate considerably and waterjet cutting becomes a more viable option. 2. Torsten Reichl, product manager for Jenoptik-Votan BIM, who is with the company’s laser and materials processing division, said that bounce back can be a problem even in the best-case scenario. Waterjet Cutting. High speed roll-to-roll laser cutting, high degree of automation. In fact, the metal laser cutter was able to cut aluminum plates a few years ago. Our fiber laser produces a beautiful edge finish to match a beautiful material. We stock and laser cut brass up to 1/4" thick. Check out some of the parts we've laser-cut in brass below. Although covering the sheet in a non-reflective coating may sound like an appropriate remedy, the surface of the metal sheet is not the only source that can cause a damaging reflection. The laser die cutting machine is specifically designed for the cutting and perforating of reflective material, transfer film and other roll materials. Copper, brass, bronze, …but gold and silver too: fiber laser allows the processing of highly reflective materials. Charles Day’s Waterjet Cutting Makes a Striking Impression in London, Key Supplier Status and Open for Business as Usual – Forward Thinking as Standard, Antimicrobial Copper in the Fight Against COVID 19. Mirror surfaces can reflect the laser beam, damaging the cutter’s interior components. This can cause it to be problematic to laser cut and so is usually supplied plastic coated on the cutting side to minimise the risk. This article aims to highlight why laser cutting reflective metals is so tricky, why other cutting methods are often advised and ultimately what is the best way for you to profile these types of materials in a range of thicknesses. Even traditional CO2 laser technology can only process aluminium up to 10mm thick, whereas our waterjet cutting capability can process materials in thicknesses up to 230mm. The reason using CO2 laser cutting technology on the aforementioned reflective materials is problematic is due to the laser machines use of beams of light and mirrors. Despite all its positives, fibre laser cutting does have a drawback. No graphics restrictions. A great example of our waterjet capabilities in the architectural sector. So regardless of your requirement we can profile reflective materials from less than 1mm all the way up to 230mm. Our fiber laser makes beautiful cuts in brass, leaving no burr and no dross on the part edge. Cutting non-ferrous and highly reflective materials using CO2 laser technology has always been a tricky operation. Firstly, we need to look at what constitutes as a highly reflective metal. In contrast, ablative laser cutting removes material layer by layer using a pulsed laser—it’s like chiseling, only with light and on a microscopic scale. Despite this, it has perhaps the most trouble at cutting metals which are reflective out of any of the other cutting processes. A robot-based laser cutting system works on a highly reflective material. Gas laser cutting, the most common type of laser-based cutting, was founded in 1964 and remains a common method. With large industrial CNC laser machines, like the one’s here at Charles Day, costing hundreds of thousands of pounds and any damage to the laser delivery system can cause lead to both considerably repair costs and lengthy downtime. The below table identifies our recommended cutting method for different materials in a range of thicknesses. It’s well known that both sliver and aluminium are considered the two most reflective metals on earth (silver itself can reflect up to 95% of visible light), and are commonly used in solar mirrors, solar pane windows, sunglasses and jewellery. With this in mind, it’s easy to see why cutting reflective metals using fibre laser technology is becoming an extremely popular method.