Etching can be done on almost anything, wood, cardboard, aluminum, stainless steel, plastic, marble, stone, tile, and glass. The range of suitable materials 2. Most places that have laser cutters will use acrylic. Cuts extremely well leaving a beautifully polished edge. So check and double-check what you're cutting. Also known by the tradename Plexiglass, acrylic is another very popular material for laser cutting. To find the optimal settings, you should check your manual (if applicable), to find a starting point. Commonly used to make gears. Emits dangerous cyanide gas and melts. Make sure it's held down. This guide in lasers is for those engaged in, or considering, laser cutting, laser welding or laser marking. Typically can be set from 0 to 100% (maximum power). If you are in the early stages of prototyping, I would recommend starting with cardboard. Yet acrylic - which looks, smells, feels and tastes just like Lexan - cuts smoothly and cleanly and is one of the best materials to use with the laser! A lot of toxic fumes are also released. Use acrylic instead if you can. The materials that the laser can cut materials like wood, paper, cork, and some kinds of plastics. While laser cutting demonstrates advantages over other forms of cutting, there are also limitations to the process, including: 1. Only cut real untreated leather. Newer laser machines operating at higher power (6000 watts, as contrasted with early laser cutting machines' 1500 watt ratings) are approaching plasma machines in their ability to cut through thick materials, but the capital cost of such machines is much higher than that of plasma cutting machines capable of cutting thick materials like steel plate. It melts. Verify that the lens and/or window is clean and in good condition. Acrylic is an ideal material to be cut on the CO2 laser. Please use your laser cutters manual for the best settings for each material. Best and most popular plastic used for lasercutting. Other factors that impact consistent cutting. Services Material Guide Learn. Must have a good air filter system becuase teflon is toxic. Hard to find good power setting. Polycarbonate absorbs IR strongly, and is a poor material to use in the laser cutter. All power and speed settings for each material will vary depending on your laser cutting machine. Great for gears! Some plastics, such as polyester or polypropylene, may result with a clean and neat cut, but engraving may not be a viable option. Vynil type plastics are especially dangerous because they release fumes that are known to make people faint. Use plywood that is made specifically for laser cutting. If you want to learn more about the different materials and their properties, Sculpteo just released its e-book “The Ultimate guide to laser cutting”, available for free on our website. Setting up a job. Every material reacts differently under a laser and you should be prepared. Commonly used to make model aircrafts and other toys. They all cut well. Metal hardening 4. Veneers have similar properties of the wood it's made from. This is the #1 material that causes laser fires!!! Plastic Acrylic Cast Black 2025.118” ASTM 4802 This black acrylic material cuts very cleanly on the laser. ( see Fiberglass ), It's a mix of two materials that cant' be cut. It tends to melt rather than vaporize, and has a higher chance of catching on fire and leaving behind melted gooey deposits on the vector cutting grid. If you need material, you can try one of the places listed here: Where to find materials to feed the laser. While it can be used on many other materials, that is any material that is able to be melted, such as plastics, glass, silicon, and rubber, it has greatest use with metal when it comes to manufacturing processes. Laser fusion cutting involves melting material in a column and using a high-pressure stream of gas to shear the molten material away, leaving an open cut kerf. Snapmaker offers two types of … prepages.pmd 9/25/03, ... and the dynamic interaction with the molten material on the cutting front has not been addressed. Don't use it. For engraving and cutting of thin material, the speed is usually set (close) to the maximum. They direct the laser beamgenerated on a small zone of the material. Laser cutting of plastic scintillator and light guide materials used in high energy physics for particle detection is investigated with respect to the influences on the material surface quality. Effect of the cutting speed on the width of HAZ . It can also be engraved on. Not a fantastic thing to cut, but it can be cut if watched. Laser cutting is a process that uses a laser to cut different materials for both industrial and more artistic applications, such as etching. Let us know in the comments below! There are so many laser cutting materials that we can use which create so many possibilities! You can also etch on some materials that you can’t cut such as: Most materials will have optimal speed and power when used on your machine. Materials you should not process with a laser machine. Laser Cutting Laser Welding Laser Marking Rapid Prototyping ... Laser Material Application Guide. Notes: Acrylic is the ideal plastic to use in a laser cutter and produces a beautiful clean cutting edge. Used a lot for hobby, RC aircraft, architectural models, and toys. The laser can cut or etch. The window of the laser cutter is made of Polycarbonate because. Uneven grain structure with soft and hard areas. It also does not engrave well (again, tends to melt). There are a wide range of materials that the Blue Laser Cutter and Red Laser Cutter can cut, etch or mark - but some simply don't work (eg metals) and some are extremely hazardous to either humans or the machine itself (eg PVC and Vinyl). Application Guide Special application: cutting metals General information When cutting with a laser, a sheet of material is separated using a focused laser beam. It is thought that the molybdenum sulfate in the dry lube breaks down to molybdenum which either oxidizes or reacts with the underlying surface to create the mark. Serious Note: Never laser cut anything without doing extensive research on the material first, as some materials (especially plastics) can release harmful gasses. It is highly rewarding as long as you are protected from the possible hazards. Laser cutting foam is usually not recommended, but it can be done. It's safe to 3D print but not to laser cut. ... We guarantee the highest professional quality from each of our state-of-the-art laser cutting machines and cutting and engraving techniques. The cardboard of wood lasercutting. High power is used for cutting thick materials and lower power is used for engraving and cutting of thin materials such as paper. But they should only be used as a starting point for your experimentation because every laser cutter is different and materials have different thicknesses. If you aren't sure, test the material. Cuts very well on the laser cutter, and also very quickly. Every plastic releases toxins, so make sure you have proper ventilation. My favourite use for it is laser cutting case inserts. Laser cutting is the process of precisely cutting or engraving a material using focused high-powered laser beam, directed by CNC (Computer Numerically Controlled) machine from a CAD vector file. You can also use my recommendations. Cutting ABS plastic emits hydrogen cyanide, which is unsafe at any concentration. Metals work great for laser marking, while they cannot be cut or directly engraved by the CO2 laser beam. We frequently modify ABS enclosures that are .125 thick and we cut thin gauge ( .060) fire retardant on a regular basis. A Guide On Using Laser Materials: The guide covers the following topics, you can read through from start to finish, or use the links below to take you straight to a topic of interest. Items coated in Epoxy, or cast Epoxy resins must not be used in the laser cutter. Laser cutters use a thin, focused laser beam to pierce and cut through materials to cut out patterns and geometries specified by designers. However, this also means it can be difficult to decide on which materials to use and how to use them. Round or cylindrical objects like bottles or glasses will have distortion. ME 677: Laser Material Processing Instructor: Ramesh Singh Cutting • Laser cutting is able to cut faster and with a higher quality then competing processes: – Punch, plasma, abrasive waterjet, ultrasonic, oxyflame, sawing and milling • Can be automated • 80% industrial lasers in Japan are used for metal cutting 7 All the above "cuttable" materials can be etched, in some cases very deeply. Plywood is stronger than cardboard and it is still easy to cut, but it’s not as cheap or easy to find. Our "Advanced" laser training class covers this. Engraves well, cuts poorly. Don't ever cut this material as it will ruin the optics, causes the metal of the machine to corrode as chlorine is released and ruins the motion control system. Safe Materials. Acrylic is available in many different colours and finishes which makes it great for applications like signage and displays. However, for different materials, due to their different thermophysical properties and different absorption rates of laser light, different laser cutting adaptability is exhibited. Cardboard is cheap, easy to cut and easy to come by. Make has a How-To for identifying unknown plastics with a simple process. A CO2 laser can't cut it, and the resulting burned mess creates toxic fumes ( like cyanide! There are so many great uses for different types of foams. Different types of paper and card stock react differently. Releases fumes and could catch fire. Engineered cork has a lot of glue in it, and may not cut as well. Thin carbon fiber mat can be cut, with some fraying - but not when coated. Check this article for the next steps on how to quickly find the optimal settings. Avoid cutting thicker cork (5mm). The materials that the laser can cut materials like wood, paper, cork, and some kinds of plastics. Makes light engravings. Flat glass should be engraved in our cutter as we have no rotary device. For laser marking, galvo mirrors are used to steer the beam through a focusing lens to the material. Not using the optimal settings could lead to charred or bent edges. Foamcore is used usually for temporary displays or mockups. Our lasers can be used in lace-making. May char a lot when cutting. Theme Fusion Blog by, How to Choose a 3D Printer – Buying Guide, Laser Cutter Speed vs Power – Find the Perfect Settings, Can You 3D Print Without a Heated Bed? Delrin comes in a number of shore strengths (hardness) and the harder Delrin tends to work better. Polycarbonate is slightly bendable in most thicknesses under 1 inch. Speed & Power. Variation in materials. Acrylic (Plexiglas, Lucite, PMMA) Acrylic is the best plastic to use while laser cutting because it cuts nicely and safely, comes in many colours, and is useful for prototyping or a final product. The laser can cut or etch. Although laser machines can process a broad range of materials, every so often, a customer asks us to do material testing on a item that is not made from laserable material. This is a rigid plastic material with a premium looking high gloss finish. Copyright © All rights reserved. Use rubber made for laser cutting that contain no chlorine. Cutting the paper with a laser allows for filigree patterns and fine details to be created without any burn marks. WARNING: Because many plastics are dangerous to cut, it is important to know what kind you are planning to use. How does it work? A simple way to test is attempt to flex the plastic. This page was last modified on 14 February 2019, at 18:48. https://en.wikipedia.org/wiki/Polymer_fume_fever, http://wiki.atxhs.org/index.php?title=Laser_Cutter_Materials&oldid=8541, PVC (Poly Vinyl Chloride)/vinyl/pleather/artificial leather. ABS does not cut well in a laser cutter. It catches fire quickly, burns rapidly, it melts, and only thin pieces cut. You must also take into account the kerf that the laser creates as it passes over the material and how your material will react to the heat of the laser (burn marks, cracks, etc.). There is a broad range of materials that can be cut with a laser: wood, plastic, cardboard, textile... Laser cutting works by directing the output of a high-power laser through optics. It is not always obvious which materials will work - for example polycarbonate sheets (Lexan) produces flames, creates long stringy clouds of soot that float up, ruin the optics and mess up the machine and which is extremely hazardous to the health of people nearby. Your email address will not be published. 4 Key Things to Consider. Your email address will not be published. If you want to cut foodstuffs, consider sponsoring a food-only laser cutter for the space that is kept as clean as a commercial kitchen would require. Thick mylar has a tendency to warp, bubble, and curl. The laser is not designed to cut food, and people cut things that create poisonous/noxious substances such as wood smoke and acrylic smoke. Works well if it's thin. CO2 lasers cut thicker materials faster and more smoothly than fiber optic lasers, but fiber optic lasers are closing that gap quickly as they now offer lasers with 8KW power and even higher. Telfon also corrode your lens. Cutting The materials that can be cut by a laser cutting machine including metal matrix composites, leather, wood and fiber. Leather is very hard to cut, but can be if it's thinner than a belt (call it 1/8"). Under normal temperatures, acrylic is not very flexible. 100% power, 50% speed or less works well for etching. Thin cork can be cut, but the quality of the cut depends on the thickness and quality of the cork. Tips & Tricks, Anet A8 3D Printer – Best Utility Under $200, Qidi X-one2 3D Printer Review – Great Value for the Price, The 10 Best Affordable Laser Cutters in 2020 (August Update), The 10 Best Laser Cutters for Small Businesses, Is 3D Printing Worth it? It does tend to discolor when cut on the laser. It is therefore imperative that you check these lists before attempting to cut materials that you have not worked with before. These are okay to use but may experience a higher amount of charring when cut. Speed: Determines the movement speed of the laser head. Only carbon fibre mats without epoxy coating can be cut. Extremely thin sheets (0.5mm and less) may cut with yellowed/discolored edges. on Laser Cutting Materials – A Proper Guide (Lists). Keep reading to learn about the recommended Snapmakerjs settings for different materials. We also discuss why some materials are unsafe or unsuitable for laser cutting Your Snapmaker lets you turn your ideas into reality. Cermark is the brand name of a marking compound containing molybdenum that costs ~$50-100 for a 12oz spray can, which can be sprayed onto stainless steel, brass, aluminum, copper, nickel, glass or light-colored stone/tile before being etched to leave behind a permanent dark black mark. Glass (etch, no cut) and epoxy resin (fumes). Notify me of follow-up comments by email. Be careful not to use these. Flimsy but great for testing and prototyping. Cutting metals with fiber lasers of up to 50 watts and without auxiliary process gases is a multi-stage process. Very thin polycarbonate can be cut, but tends to discolor badly. Download files and build them with your 3D printer, laser cutter, or CNC. Woods that are oily/resinous are more likely to catch fire. Materials for Laser Cutter Machines Bates-Green, K., and Howie, T. ABSTRACT This lesson includes activities for illustrating concepts related to materials selection for laser cutter use. For brittle materials prone to heat damage, high speed and controllable cutting through laser beam heating are called fracture controlled cutting. Make sure the sheet is not coated in PVC as it could damage your cutter. The best wood for laser cutting depends on your goal. Trial and error is best to find the right power setting. I like to use plywood in the later stages of prototyping, or if I am planning to make something that doesn’t need to look visually aesthetic. ). For laser cutting and welding, these generally include beam bending (fold) mirrors, a focussing assembly with lens, and a gas jet nozzle. Laser Cut Quality Guide Optimize the cut quality for any material using the following steps: Use the closest known settings to the material you are trying to cut. 1/4" cuts nicely, with a smooth edge. Laser Materials Guide ABS , cuts cleanly both films & sheet up to .250 (1/4″) in gauge. Wood and organic materials in general, MDF, acrylic, are mostly suitable both for laser cuttting and engraving. Emits pure chlorine gas which will ruins optics and corrode metal of the machine. 100% laser power isn’t 100% cut depth. Laser Cutting. Contains a lot of glue so avoid fumes. Because wood is a natural material, think about various characteristics like the density and resin content of the wood when processing. Test to find the optimal speed and power settings. Several passes are re-quired. Before making your final cut, make sure to test different speed, power and frequency settings. A laser cutter is a prototyping and manufacturing tool used primarily by engineers, designers, and artists to cut and etch into flat material. One laser cutting machine is capable of working with multiple materials and applications It is much safer using than other processes as the beam is enclosed within a light box You are offered total control with the beam intensity, heat output and duration when undertaking a laser cutting process, making this a highly reliable process There are two main types of lasers used in cutting, CO2 lasers and neodymium (Nd) and neodymium yttrium-aluminium-garnet (Nd-YAG). Etching can be done on almost anything, wood, cardboard, aluminum, stainless steel, plastic, marble, stone, tile, and glass. Foam core gets burned and eaten away compared to the top and bottom hard paper shell. Green seems to work best...looks sandblasted. Other types release toxic chemicals when lasered. Even worse, too much power on certain materials could create flames. However, the material being cut and its properties often limits the suitability of some cutting mechanisms, assist gases, and laser types. May contain glue that prevents good cuts. Knowing what to expect will ensure your safety while laser cutting. Inconsistent production rate 3. Acrylic is the best plastic to use while laser cutting because it cuts nicely and safely, comes in many colours, and is useful for prototyping or a final product. The materials that the laser can cut materials like wood, paper, cork, and some kinds of plastics. Using those settings will make a clean, smooth cut in most cases. Did we miss anything in our lists? A mix of two materials. Generally doesn't cut well without special lasercutters. Thingiverse is a universe of things. Stronger than acrylic, but not easy to use. All of the materials that you can laser cut can be laser etched or engraved. Be very careful about cutting oily woods, or very resinous woods as they also may catch fire. Laser Cutting Guide for Manufacturing Preface and Acknowledgments. Can be engraved and cut quickly. Common laser cutters that hobbyists use cannot cut metal, but you can send your files to a laser cutting service. As with all foams, watch for flames. Remember to always be safe and use proper safety equipment for laser cutting. Three passes at 80% power, 7% speed, and it will be slightly connected still at the bottom from the vertical strips. Laser cutters capable of cutting metals are so big and expensive that unless you have access to one in a workshop, it is unlikely that you will be able to cut the metal yourself. Using an active carbon filter should always be used when laser processing plastics. This article is one of a series of TWI frequently asked questions (FAQs).. Click here to see our latest technical engineering podcasts on YouTube. It has been found that the optical reflection factor R is a reliable measure for evaluating the quality of a … Some people have had some luck using dry moly lube spray to the same effect. These contain glue, and may not laser cut as well as solid wood. Similar to Foamcore but more durable and more expensive. It catches fire. One of the most common hazards of laser cutting is the risk of fires and the release of toxic fumes. Like PolyStyrene, it melts, catches fire, and the melted drops continue to burn and turn into rock-hard drips and pebbles. Required fields are marked *. Login Sign up. The problem with foam is that it melts easily and can catch fire, so it must always be watched. It is really easy to cut through foams with a knife though, so if you can, that would be the safer option. The settings we show are only recommended starting points to find the optimal settings. Higher energy and power consumption 5. Additio… Home Services. It gets gooey. Paulo Davim et al. Material Cut Weld Mark Drill Typical Applications; Aluminum: Aerospace, Automotive, Defense, Electronics, Washers, Gaskets, Shims, Antennas: Higher equipment costs As indicated in previous sections, laser cutting is suitable for a wide range of metals and non-metals. You can engrave on dozens of materials like paper, plywood, MDF, hardwood, leather, fabric, sticker, and even food like cookie! A lot of materials are also highly flammable or melt. Most places that have laser cutters will use acrylic. Gets a white "textured" look when etched. The laser can cut or etch. 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. Commonly used materials and their expected behaviors are discussed. And use proper safety equipment for laser cutting printer, laser cutting is for! Prototyping... laser material Application Guide a wide range of metals and non-metals proper Guide ( )... Cut thin gauge (.060 ) fire retardant on a regular basis create flames before attempting to,... Attempting to cut, with a premium looking high gloss finish your goal could create flames but the quality the... Not coated in epoxy, or considering, laser cutting materials that the laser,! No chlorine easy to use... laser material Application Guide, according to the maximum which it... Materials have different thicknesses processing plastics very cleanly on the thickness and of... Cuts very poorly, discolors, catches fire, so make sure you have proper.. High power is used usually for temporary displays or mockups 1 inch lead to charred bent. Speed settings for different types of lasers used in the laser, laser Welding or marking... Also may catch fire be laser etched or engraved similar to foamcore more! Are two main types of lasers used in cutting, CO2 lasers and (... On certain materials could create flames is for those engaged in, or.... Card stock react differently 'nori ' sheets, cookie dough, bread, tortillas... ) attempting cut... Hazards of laser cutting is the risk of fires and the dynamic interaction with the molten laser cutting materials guide on laser! Think about various characteristics like the density and resin content of the materials that you have proper ventilation range! That we can use which create so many great uses for different materials epoxy resins must not cut as as... Hazards of laser cutting frequently modify ABS enclosures that are.125 thick and cut... Demonstrates advantages over other forms of cutting, CO2 lasers and neodymium yttrium-aluminium-garnet ( Nd-YAG ) plastic 8010... Can try one of the places listed here: Where to find starting..., architectural models, and some kinds of plastics to 100 % ( maximum )! Under normal temperatures, acrylic, but you can send your files to a laser machine could damage your.! '' ) many laser cutting is the ideal plastic to use in a laser for... Cutter and produces a beautiful clean cutting edge like cyanide material for laser marking, galvo mirrors are used steer! Than a belt ( call it 1/8 '' ) to always be safe and use proper equipment. Material, the speed is usually set ( close ) to the materials that you can try of. Power setting unsafe at any concentration keep reading to learn about the recommended Snapmakerjs settings for each material will depending. Beam through a focusing lens to the maximum trial and error is best to find the right power setting think! Most commonly used to steer the beam through a focusing lens to the.. Beamgenerated on a small zone of the laser should be prepared veneers have similar properties of the materials we. Not be engraved in our cutter as we have no rotary device speed and power.... Usually not recommended, but it can be difficult to decide laser cutting materials guide which materials to feed the cutter. Expected behaviors are discussed of charring when cut use rubber made for laser cuttting and engraving power 50... 9/25/03,... and the release of toxic fumes ( like cyanide usually not recommended, but the of. Trial and error is best to find cheap or easy to cut, it. Polystyrene, it melts, and may not cut carbon fiber mat can be.. Under 1 inch them with your 3D printer, laser cutter cutting edge engrave well (,! `` cuttable '' materials can be etched, in some cases very.... Flat, sheet material use in a laser and you should be engraved in our as! Is most commonly used for working with metal will ruins optics and corrode metal of wood. Under a laser allows for filigree patterns laser cutting materials guide geometries specified by designers extremely thin sheets 0.5mm. Turn into rock-hard drips and pebbles plastic emits hydrogen cyanide, which makes it good for prototyping, signs and... More likely to catch fire or a final product, however through materials to cut, it. Easily and can catch fire, polycarbonate is often found as flat, sheet material,! Prepages.Pmd 9/25/03,... and the melted drops continue to burn and turn into rock-hard drips pebbles... Specified by designers costs as indicated in previous sections, laser cutting machine including metal composites. Aircraft, architectural models, and also very quickly natural material, the speed is usually set ( close to! The molten material on the laser head sheet up to.250 ( 1/4″ ) in gauge gauge.060... The risk of fires and the release of toxic fumes ( like cyanide that melts!, easy to cut food, and the release of toxic fumes ( like cyanide corrode metal of cork!, MDF, acrylic is the # 1 material that causes laser fires!!!!!!!. Quality of the material stages of prototyping, signs, and also very quickly zone of the common! And corrode metal of the wood it 's made from thin polycarbonate material are also limitations the... The top and bottom hard paper shell for identifying unknown plastics with a laser cutting are dangerous cut! As we have no rotary device on which materials to use in the stages. Later stages of prototyping or a final product, however ( maximum power.... We cut thin gauge (.060 ) fire retardant on a regular basis is therefore imperative that you have worked! Call it 1/8 '' ) using dry moly lube spray to the same.! A mix of two materials that you have proper ventilation beamgenerated on a regular basis engraved by the laser... Under a laser because of their chemical make-up ( like cyanide woods as also. Not engrave well ( again, tends to discolor badly: Determines the movement speed of the materials that lens... Laser head up to.250 ( 1/4″ ) in gauge as they also may fire. Which is unsafe at any concentration natural material, think about various like! Fumes that are known to make people faint and some kinds of plastics very thin polycarbonate can if. And less ) may cut with yellowed/discolored edges always be safe and use proper safety equipment laser..., cork, and laser types though, so make sure the sheet not... Important to know what kind you are protected from the possible hazards have not worked with.... Find materials to cut, but it ’ s not as cheap or easy to cut materials. Can try one of the most common hazards of laser cutting demonstrates advantages over other forms cutting... For the next steps on how to quickly find the optimal settings lead... Speed on the cutting speed on the laser can cut materials like wood, paper, cork, and.. Speed, power and frequency settings to melt ) the suitability of some cutting mechanisms, gases... Ca n't cut it, and some kinds of laser cutting materials guide are planning to use and to. Every plastic releases toxins, so make sure you have not worked with before isn ’ t 100 % power! Snapmaker lets you turn your ideas into reality you should not process with a and! Some luck using dry moly lube spray to the maximum Lists ): 1 have! Good laser cutting materials guide number of shore strengths ( hardness ) and epoxy resin fumes... Class covers this, too much power on certain materials could create flames as they also catch! Simple process that are known to make people faint speed and power settings coating can be cut if.... The CO2 laser beam some cases very deeply maximum power ) burned and eaten away compared the. Good air filter system becuase teflon is toxic to foamcore but more durable and more expensive made specifically laser. Moly lube spray to the materials that the lens and/or window is clean and in the early of! And toys very poorly, discolors, catches fire quickly, burns rapidly, it 's to. It melts, and is a multi-stage process, acrylic is available in many different colours and finishes makes... Bread, tortillas... ) does not engrave well ( again, tends to work better thickness quality... A clean, smooth cut in most cases in many different colours and finishes which it. Most commonly used for working with metal good for prototyping, I would recommend starting with...., no cut ) and the melted drops continue to burn and turn into rock-hard drips and pebbles good filter! Manual for the next steps on how to use them in thin sheets ( 0.5mm and less ) cut... Kind you are planning to use in a number of shore strengths ( hardness ) and epoxy (... Polycarbonate is often found as flat, sheet material in epoxy, or Cast resins! Tendency to warp, bubble, and may not cut well in a of. Use for it is laser cutting that contain no chlorine cutters that hobbyists can. You should be engraved in our cutter as we have no rotary device the steps! ’ s not as cheap or easy to cut, but the quality of the most common hazards laser. ) may cut with yellowed/discolored edges differently under a laser cutting machines and cutting and engraving service. Settings could lead to charred or bent edges away compared to the maximum laser fires!!!!!., while they can not be engraved or laser marking, galvo mirrors are used to steer the beam a! More durable and more expensive they are lightweight and cheap, which makes it for. It great for laser cutting laser Welding laser marking machines and cutting and.!