Laser machines have the power to change your business with their precision, speed, and versatility. Whether youre new to the world of lasers or are looking to upgrade your equipment, its natural to have questions.
Here are some of the top 9 most frequently asked questions about laser machines to help you make an informed decision.
A laser machine is a device that uses a concentrated beam of light to cut, engrave, or etch a design into material. These machines are highly precise and can work on a variety of surfaces, including wood, arcylic, granite, slate, brick and leather.
A laser cutting machine uses a high-powered laser beam directed through optics to cut materials. The focused laser burns or melts the material, leaving a clean edge that allows you to create precise designs. This process is controlled by the computer numerical control (CNC), which allows you to repeat those designs.
While both machines use the same laser technology, they serve different purposes. A laser engraving machine is designed to etch detailed design, logos, or images onto surfaces. It removes a small amount of material to create a permanent mark.
On the other hand, a laser cutting machine is usually used to cut through materials entirely, making it ideal for creating shapes or parts out of other, larger substances.
Laser cutter machines can be used on a wide variety of materials, including wood, acrylic, fabric, leather, metal, or paper and cardboard. This wide range makes laser cutter machines ideal to bring into an existing business; regardless of what you create or sell, theres likely a way a laser machine can help enhance that product.
Laser etching is a type of laser engraving. With etching, the laser creates a raised mark on the materials surface, while engraving creates an inset groove. Laser etching machines alter the surface of the material without cutting it too deeply.
Laser machines are known for their incredible precision. They can achieve cuts as small as a few micrometers, making them ideal for detailed and intricate work. The accuracy of a laser machine depends on factors like the quality of the laser source, the control system, and the condition of the optics.
Regular maintenance is required for the laser machine to keep running efficiently. This includes cleaning the optics, checking and replacing the laser tube if necessary, ensuring proper ventilation, and regularly calibrating the machine. Following the manufacturers guidelines for maintenance can help prolong your laser machines lifespan and maintain its performance.
Laser machines are generally safe to use when the proper safety protocols are followed. Laser machine operators should wear the appropriate safety gear, like safety goggles, and ensure the machine is used in a well-ventilated area. Many laser cutting machines come with safety features like emergency stop buttons as well.
The cost of a laser machine can vary widely depending on the type, size, and power of the machine. Entry-level machines can cost a few hundred dollars, while high-end machines can go up into the thousands. Factors like how you plan to use the laser machine, your business needs, and your budget will all help inform which laser machine you buy.
To start using laser cutting in your business, request a quote for a laser machine today.
Theres a reason why - outside of the various experiments by hobbyists and others - you dont see any low-cost semiconductor-based laser cutters or engravers.
The main reason is cost per watt.
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If you start to price out what it would cost using semiconductor lasers (either monolithic or combined beam) to get the same wattage as a gas tube laser, you quickly find that gas tube lasers are much cheaper per watt - at least currently.
Furthermore, theres a question of what wavelength to use - which will effect your choice of what laser to use. As noted by Sams Laser FAQ on Carbon Dioxide Lasers:
Unlike the other lasers producing visible or short near-IR light, the output of a CO2 laser is medium-IR radiation at 10.6 um. At this wavelength, normal glass and plastics are opaque, and water completely absorbs the energy in the beam. The 10.6 um energy is ideal for cutting, engraving, welding, heat treating, and other industrial processing of many types of materials including (as appropriate): metals, ceramics, plastics, wood, paper, cardboard, fabric, composites, and much much more.
This is why you see such cutters and engravers use a CO2 laser tube - its the proper tool for the job in the majority of cases.
In fact - I would highly encourage you to read the entirety of the Sams Laser FAQ as it will likely answer all of your questions on lasers, usage, and safety.
Basically - you are likely to spend more money on trying to create a semiconductor-based laser cutter or engraver - and the results will likely be disappointing - than if you spent the money on a proper laser cutter/engraving machine.
Something you need to ask yourself is what is my goal? - is your goal to experiment and learn about how to build a laser cutter (even if it doesnt work or works poorly)? Or is your goal to be able to actually process materials for a project using a laser cutter?
If the former, then continue to play - just be aware that you may spend a lot of money, time, and effort - but if this is worth it for the learning experience to you, then go for it. If, however, your goal is the latter - then trying to build your own laser cutter is not likely the best choice; you would be better off spending the money on a pre-built device. There are many options available, for fairly low costs (depending on how much you plan to use them - none are really low cost if you dont plan on using them fairly often).
Theres always the small and low-cost (under ~$500 USD now) Chinese laser cutter/engravers; just note that while these are low cost, then can be very finicky to get working from what I understand; here in the States, we have a company in Las Vegas (Full Spectrum Laser) that imports them, does the re-work, then resells them at a higher price (basically making sure things work properly for the end buyer).
The next step up - while still giving a DIY option (to an extent) - is this kit - which honestly I think is the best bang for the buck - if you are willing to spend the time putting such a kit together.
Beyond this, you are looking at machines by companies like Universal Laser Systems - the name brands in laser cutting/engraving - and they have prices to match. But they do have top-quality equipment.
Something to note when it comes to laser cutters that use CO2 lasers (mainly the water-cooled tubes; the ULS systems acutally use (I believe) an RF excited tube that is air-cooled - which is a different tech) - is that the more you use the tube, the longer its lifespan - so if you decide to go down the route of building your own laser cutter using a tube, purchase the tube last; also if you purchase a pre-made machine, use it often to get the maximum life out of the tube. In other words, tubes for CO2 lasers have a shelf-life, and they pre-maturely fail the less they are used.
Also - if your goal is materials processing - then you might also look into a CNC router; while not as fast as a laser cutter, it can typically do the same kind of work, provided you dont mind the wider kerf - that is, the width of the cut (I think of a laser cutter as a CNC router with a very small kerf).
Finally - note that whether you use a laser cutter or a CNC router - you are going to have to deal with a mess - in the case of a CNC router, its a bunch of dust that youll have to vacuum up and keep clean. In the case of a laser cutter - you have to deal with smoke and gasses created by the cutting process. You need to have some way to ventilate the machine, possibly scrubbing the gases (mainly for smell), and also deal with not letting the gasses/smoke get on the lens/mirrors of the machine (so you usually need a compressed air-source as well directing a jet of air at the exit aperture). Also with a laser cutter or engraver - never walk away from the machine while it is in operation (this especially includes homebrew builds). The material being cut or engraved can catch fire - so you need to be able to watch for that and take measures if needed, to put it out. Also - never cut PVC in a laser cutter - itll release chlorine gas (poisonous). Never cut styrene (or foam board) - itll easily catch fire.
Im going to stop here - Ive almost written a book. I dont have a lot of experience with laser cutters (Ive only used one - a ULS 60 watt job at my local TechShop), but I have studied the heck out of things (up to and including homebrew CO2 lasers - which you want to stay away from if your goal is to make a cutting machine); ultimately, if I do get a machine of my own, it will either be one from that company in Vegas, or that kit I mentioned. But then again, my goal has been to have a machine to cut things - not to learn how to build them. Your goal(s) may be different, but you need to consider them first.
If you want to learn more, please visit our website Fabric Laser Cutting Machine.