Whether you are an accomplished engineer or a beginner maker, learning the correct uses of design equipment to avoid pitfalls and mistakes will take time and experience. From time to time, issues come up that leave designers wondering what they did wrong or the way they could do something better. This is true in every field and Fiber Laser Marking System engraving is no different.
Knowing how to avoid these mistakes so they don’t appear again is half the battle. With that in mind, let’s talk about five of the very common mistakes in terms of laser engraving and the ways to avoid them in future projects.
Mistake 1: Engraving Fabric however the Laser Burns through the Material – The first step in avoiding burning fabric with a laser engraving/cutting machine would be to understand which fabrics can withstand the procedure and at what temperatures. Heartier fabrics such as denim, canvas and leather can withstand higher power settings during engraving. But when it comes to delicate fabrics, you should 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 if the fabric can withstand it, boost the power until you have the results you are searching for.
When it comes to direct-to-garment engraving, it is helpful to lower the dots per inch (DPI) in which you engrave. The greater the DPI, the more material will likely be removed. Engraving in a lower DPI helps ensure the laser just slightly vaporizes the very best layer and doesn’t burn entirely with the fabric. Most fabric engravings do fine at 150 to 300 DPI.
Mistake 2: Acrylic Doesn’t Generate a Frosty White Engraving – Probably, this really is caused using the wrong acrylic in the application. Two kinds of acrylics are generally utilized in laser engraving and both are compatible with different applications. Cast acrylic sheets and objects are made of a liquid acrylic which is poured into molds that may then be set into various sizes and shapes. This sort of acrylic is ideal for engraving as it turns a frosty white color when engraved, which makes it suitable for awards and plaques. It may be cut using a laser, however it won’t give projects flame-polished edges.
One other form of acrylic utilized in laser engraving is called extruded acrylic, which is formed into sheets by a machine. Extruded acrylic is usually less expensive than cast acrylic since it is formed through a higher-volume manufacturing technique. However, it does react very differently using the laser engraving machine. This kind of acrylic cuts cleanly and smoothly and generates a flame-polished edge; however, when engraved, it doesn’t produce that frosted look, but alternatively a clear engraving. So make sure you are using cast acrylic if you want a frosted white finish.
Mistake 3: Inconsistent Glass Engraving – Oftentimes, when a Steel Fiber Metal Laser Cutter strikes glass it will fracture the outer lining but not engrave deeply or take away the material necessary to engrave fully. The fractured glass surface will produce a frosted appearance, but can be rough and chipped depending on the type of glass which is being engraved. Whilst the frosted look is desired, no one wants a rough surface or chipping.
So that you can generate a smooth frosted finish, try incorporating one or several of the tips below:
Use a lower resolution, about 300 DPI, that can produce a better result on glass while you separate the dots you might be engraving.
Alter the black in your graphic to 80 % black. Run your laser engraver with Jarvis Dithering (this dithering pattern are available in Epilog’s print driver), which can help to provide a smooth finish.
Sometimes, applying a thin, wet sheet of newspaper or perhaps a paper towel to the engraving area will help with heat dissipation and increase the engraving process. Just be sure there are no wrinkles inside the paper after it really is applied. An additional way to dissipate heat is to apply a thin coat of liquid dish soap to the area you’re engraving – either together with your finger or perhaps a paper towel. Finally, if you will find shards of glass after engraving, polish the location having a non-scratch scour pad.
Mistake 4: Wood Engraving Produces Different Results on the Same Setting – Wood is among the most laser-friendly materials available not merely because it can be cut quickly, but also because it engraves perfectly. However, different woods have different reactions if they are laser engraved and provide different results. Lighter woods, like cherry or maple, produce a nice contrast where laser burns away the wood, while denser woods require more Laser System For Textile to reduce or engrave.
Grain density can transform dramatically depending on the type of wood you might be working with. Cherry, alder, walnut and maple have fairly small veins of grain inside them, while oak has medium to large veins. As an example, when a large square pmupgg engraved into a piece of cherry, it would have got a uniform appearance; the location engraved will be smooth with little variation in height. However, if the same square was engraved into a piece of 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
E-mail: [email protected]
Tel: (+86) 531-5557-2337