If you are an efficient engineer or a inexperienced maker, learning the appropriate uses of design equipment to prevent pitfalls and mistakes takes time and experience. From time to time, issues appear that leave designers wondering what they did wrong or how they could do something better. This is true in any field and Handheld Laser Cleaner engraving is no different.
Knowing how to prevent these mistakes so they don’t show up again is half the battle. Bearing that in mind, let’s discuss five of the most common mistakes in terms of laser engraving and ways to prevent them in the future projects.
Mistake 1: Engraving Fabric nevertheless the Laser Burns through the Material – The first step in avoiding burning fabric having a laser engraving/cutting machine would be to understand which fabrics can withstand the procedure as well as 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 in case the fabric can withstand it, raise the power before you obtain the results you are looking for.
With regards to direct-to-garment engraving, it is actually useful to lower the dots per inch (DPI) where you engrave. The greater the DPI, the greater material will be removed. Engraving with a lower DPI helps ensure the laser just slightly vaporizes the top layer and doesn’t burn entirely with 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 in the application. Two types 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 that is certainly poured into molds that can 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 ideal for awards and plaques. It can be cut having a laser, but it won’t give projects flame-polished edges.
The other type of acrylic utilized in laser engraving is known as extruded acrylic, that is formed into sheets with a machine. Extruded acrylic is normally cheaper than cast acrylic as it is formed through a higher-volume manufacturing technique. However, it can react very differently with all the laser engraving machine. This type of acrylic cuts cleanly and smoothly and produces a flame-polished edge; however, when engraved, it doesn’t produce that frosted look, but rather a specific engraving. So ensure you are using cast acrylic if you prefer a frosted white finish.
Mistake 3: Inconsistent Glass Engraving – Oftentimes, when a Portable Fiber Laser Marking Machine strikes glass it can fracture the surface but not engrave deeply or remove the material necessary to engrave fully. The fractured glass surface will produce a frosted appearance, but can be rough and chipped depending on the kind of glass that is certainly being engraved. As the frosted look is desired, no one wants a rough surface or chipping.
So that you can create a smooth frosted finish, try incorporating one or several of the tips below:
Make use of a lower resolution, about 300 DPI, which will generate a better result on glass as you separate the dots you happen to be engraving.
Alter the black inside your graphic to 80 % black. Run your laser engraver with Jarvis Dithering (this dithering pattern are available in Epilog’s print driver), that will help to provide a smooth finish.
Sometimes, applying a thin, wet sheet of newspaper or perhaps a paper towel for the engraving area can help with heat dissipation and enhance the engraving process. Just be sure you will find no wrinkles in the paper after it is actually applied. A different way to dissipate heat is to apply a thin coat of liquid dish soap for 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 location using 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 just because it may be cut effortlessly, but also since it engraves perfectly. 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 the laser burns away the wood, while denser woods require more 150w Laser Cutting Machine to cut or engrave.
Grain density can transform dramatically depending on the form of wood you are working with. Cherry, alder, walnut and maple have fairly small veins of grain within them, while oak has medium to large veins. For instance, in case a large square pmupgg engraved into a bit of cherry, it would have got a uniform appearance; the area engraved could 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 got a 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