If you are a proficient engineer or a inexperienced maker, learning the appropriate uses of design equipment in order to avoid pitfalls and mistakes will take time and experience. Every now and then, issues appear that leave designers wondering the things they did wrong or the way that they could do something better. This is true in almost any field and Laser Etching Metal engraving is no different.
Knowing how to avoid these mistakes therefore they don’t show up again is half the battle. With that in mind, let’s discuss five of the most common mistakes when it comes to laser engraving and ways to prevent them in the future projects.
Mistake 1: Engraving Fabric nevertheless the Laser Burns with the Material – Step one in avoiding burning fabric with a laser engraving/cutting machine would be to understand which fabrics can withstand the procedure and also at what temperatures. Heartier fabrics like denim, canvas and leather can withstand higher power settings during engraving. But when it comes to delicate fabrics, it is essential to start your settings at high speed (near or at 100%) and low power (around 5% to 10%). Test these initial settings on some spare material, and when the fabric can withstand it, increase the power until you obtain the results you are interested in.
In terms of direct-to-garment engraving, it really is beneficial to lower the dots per inch (DPI) where you engrave. The greater the DPI, the greater material will be removed. Engraving in a lower DPI helps make sure the laser just slightly vaporizes the top layer and doesn’t burn entirely from the fabric. Most fabric engravings do fine at 150 to 300 DPI.
Mistake 2: Acrylic Doesn’t Produce a Frosty White Engraving – More than likely, this is caused by using the wrong acrylic inside the application. 2 kinds of acrylics are usually utilized in laser engraving and both are suitable for different applications. Cast acrylic sheets and objects are made of a liquid acrylic that is certainly poured into molds that will then be set into various sizes and shapes. This type of acrylic is great for engraving since it turns a frosty white color when engraved, making it appropriate for awards and plaques. It can be cut with a laser, nevertheless it won’t give projects flame-polished edges.
Another form of acrylic used in laser engraving is called extruded acrylic, that is formed into sheets by a machine. Extruded acrylic is usually more affordable than cast acrylic since it is formed by way of a higher-volume manufacturing technique. However, it can react very differently with all the laser engraving machine. This sort of acrylic cuts cleanly and smoothly and produces a flame-polished edge; however, when engraved, it doesn’t produce that frosted look, but instead a specific engraving. So ensure you are using cast acrylic if you need a frosted white finish.
Mistake 3: Inconsistent Glass Engraving – Oftentimes, when a Germany Ipg Laser Marking Machine strikes glass it can fracture the top however, not engrave deeply or remove the material required to engrave fully. The fractured glass surface will create a frosted appearance, but may be rough and chipped depending on the form of glass which is being engraved. Whilst the frosted look is desired, nobody wants a rough surface or chipping.
In order to produce a smooth frosted finish, try incorporating one or some of the tips below:
Make use of a lower resolution, about 300 DPI, that will produce a better result on glass when you separate the dots you are engraving.
Modify the black within your graphic to eighty percent black. Run your laser engraver with Jarvis Dithering (this dithering pattern are available in Epilog’s print driver), which will help to provide a smooth finish.
Sometimes, applying a thin, wet sheet of newspaper or even a paper towel towards the engraving area may help with heat dissipation and improve the engraving process. Just make sure you can find no wrinkles inside the paper after it is actually applied. An additional way to dissipate heat is to use a thin coat of liquid dish soap towards the area you’re engraving – either along with your finger or perhaps a paper towel. Finally, if there are shards of glass after engraving, polish the area with a non-scratch scour pad.
Mistake 4: Wood Engraving Produces Different Results on the Same Setting – Wood is one of the most laser-friendly materials available not just because it may be cut very easily, but also because it engraves perfectly. However, different woods have different reactions when they are laser engraved and produce different results. Lighter woods, like cherry or maple, produce a nice contrast in which the laser burns away the wood, while denser woods require more Printer Machine Code to slice or engrave.
Grain density may change dramatically depending on the form of wood you are dealing with. Cherry, alder, walnut and maple have fairly small veins of grain in them, while oak has medium to large veins. As an example, when a large square pmupgg engraved into a bit of cherry, it might possess a uniform appearance; the region engraved will be smooth with little variation in height. However, when the same square was engraved into some oak, its appearance would vary greatly in height and would have a very non-uniform appearance.
Jinan MORN Technology Co., Ltd. (MORN GROUP) is a leading laser machine manufacturers and exporter in China. We are specialized in fiber laser cutting machine and fiber laser marking machine with 10 years experience.
Jinan MORN Technology CO., Ltd.
Address:13F, Building 5, Qisheng Mansion,Xinluo Street,High-Tech Zone, Jinan, China, 250101
Tel: (+86) 531-5557-2337