If you are an efficient engineer or a novice maker, learning the correct uses of design equipment to avoid pitfalls and mistakes takes time and experience. From time to time, issues appear that leave designers wondering what they did wrong or the way they could do something better. This is true in almost any field and Laser Cleaning Rust engraving is no different.
Knowing ways to avoid these mistakes so they don’t come up again is half the battle. Knowing that, let’s speak about five of the very most common mistakes in terms of laser engraving and ways to avoid them later on projects.
Mistake 1: Engraving Fabric nevertheless the Laser Burns with the Material – The first step in avoiding burning fabric having a laser engraving/cutting machine is always to understand which fabrics can withstand the process as well as at what temperatures. Heartier fabrics like denim, canvas and leather can withstand higher power settings during engraving. But with regards 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, raise the power before you have the results you are interested in.
When it comes to direct-to-garment engraving, it is actually helpful to lower the dots per inch (DPI) where you engrave. The greater the DPI, the greater material is going to be removed. Engraving at a lower DPI helps ensure 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 – Most likely, this can be caused by utilizing the wrong acrylic in the application. Two types of acrylics are usually found in laser engraving and both are suitable for different applications. Cast acrylic sheets and objects are produced from a liquid acrylic which is poured into molds that may then be set into various styles and sizes. This kind of acrylic is perfect for engraving because it turns a frosty white color when engraved, which makes it suitable for awards and plaques. It could be cut with a laser, but it won’t give projects flame-polished edges.
One other kind of acrylic found in laser engraving is called extruded acrylic, which can be formed into sheets with a machine. Extruded acrylic is generally cheaper than cast acrylic since it is formed through a higher-volume manufacturing technique. However, it does 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 alternatively a clear engraving. So ensure you are using cast acrylic if you need a frosted white finish.
Mistake 3: Inconsistent Glass Engraving – Oftentimes, whenever a 100w Fiber Laser strikes glass it will fracture the surface but not engrave deeply or eliminate the material necessary to engrave fully. The fractured glass surface will generate a frosted appearance, but can be rough and chipped depending on the kind of glass that is certainly being engraved. While the frosted look is desired, nobody wants a rough surface or chipping.
So that you can generate a smooth frosted finish, try incorporating one or several of the tips below:
Utilize a lower resolution, about 300 DPI, which will produce a better result on glass as you separate the dots you are engraving.
Change the black within your graphic to 80 percent black. Run your laser engraver with Jarvis Dithering (this dithering pattern can be found 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 towards the engraving area can help with heat dissipation and increase the engraving process. Just make sure you can find no wrinkles in the paper after it really is applied. Another way to dissipate heat is to apply a thin coat of liquid dish soap towards the area you’re engraving – either along with your finger or a paper towel. Finally, if there are shards of glass after engraving, polish the region having a non-scratch scour pad.
Mistake 4: Wood Engraving Produces Different Results on the Same Setting – Wood is probably the most laser-friendly materials available not just because it can be cut effortlessly, but also because it engraves adequately. However, different woods have different reactions when they are laser engraved and create different results. Lighter woods, like cherry or maple, generate a nice contrast where laser burns away the wood, while denser woods require more Barcode Laser Marking Machine to slice or engrave.
Grain density can change dramatically depending on the type of wood you happen to be dealing with. Cherry, alder, walnut and maple have fairly small veins of grain inside them, while oak has medium to large veins. For instance, in case a large square pmupgg engraved into some cherry, it would possess a uniform appearance; the region engraved would be smooth with little variation in height. However, when 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
Tel: (+86) 531-5557-2337