Whether you are a proficient engineer or a beginner maker, learning the proper uses of design equipment to prevent pitfalls and mistakes will take time and experience. From time to time, issues come up that leave designers wondering the things they did wrong or the way they could do something better. This is true in any field and Metal Laser Marking Machine Price engraving is no different.
Knowing how to avoid these mistakes so they don’t come up again is half the battle. Bearing that in mind, let’s speak about five of the very most common mistakes with regards to laser engraving and ways to prevent them later on projects.
Mistake 1: Engraving Fabric however the Laser Burns with the Material – The first step in avoiding burning fabric with a laser engraving/cutting machine would be to understand which fabrics can withstand this process as well as at what temperatures. Heartier fabrics such as denim, canvas and leather can withstand higher power settings during engraving. But in terms of 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 when the material can withstand it, boost the power up until you get the results you are interested in.
When it comes to direct-to-garment engraving, it is actually useful to lower the dots per inch (DPI) at which you engrave. The higher the DPI, the better material is going to be removed. Engraving in a lower DPI helps make sure the laser just slightly vaporizes the best layer and doesn’t burn entirely through the fabric. Most fabric engravings do fine at 150 to 300 DPI.
Mistake 2: Acrylic Doesn’t Produce a Frosty White Engraving – Probably, this is caused using the wrong acrylic within the application. Two kinds of acrylics are generally used in laser engraving and both are suitable for different applications. Cast acrylic sheets and objects are produced from a liquid acrylic that is poured into molds that may then be set into various sizes and shapes. This kind of acrylic is ideal for engraving because it turns a frosty white color when engraved, making it suitable for awards and plaques. It may be cut using a laser, but it won’t give projects flame-polished edges.
Another kind of acrylic utilized in laser engraving is known as extruded acrylic, which is formed into sheets by way of a machine. Extruded acrylic is generally cheaper than cast acrylic as it is formed by way of a higher-volume manufacturing technique. However, it can react very differently using the laser engraving machine. This kind of acrylic cuts cleanly and smoothly and creates a flame-polished edge; however, when engraved, it doesn’t produce that frosted look, but rather a precise engraving. So ensure you are using cast acrylic if you want a frosted white finish.
Mistake 3: Inconsistent Glass Engraving – Oftentimes, each time a Mopa Fiber Laser Marker strikes glass it will fracture the top although not engrave deeply or take away the material necessary to engrave fully. The fractured glass surface will produce a frosted appearance, but may be rough and chipped depending on the form of glass that is being engraved. As the frosted look is desired, nobody wants a rough surface or chipping.
In order to 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 while you separate the dots you might be engraving.
Change the black within your graphic to 80 % black. Run your laser engraver with Jarvis Dithering (this dithering pattern can be found in Epilog’s print driver), that will help to provide a smooth finish.
Sometimes, applying a thin, wet sheet of newspaper or even a paper towel for the engraving area may help with heat dissipation and improve the engraving process. Just be certain you can find no wrinkles in the paper after it really is applied. An additional way to dissipate heat is to use a thin coat of liquid dish soap to 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 one of the most laser-friendly materials available not only because it could be cut very easily, but also as it engraves perfectly. However, different woods have different reactions if they are laser engraved and produce different results. Lighter woods, like cherry or maple, generate a nice contrast where laser burns away the wood, while denser woods require more Hobby Laser Cutting Machine 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 within them, while oak has medium to large veins. As an example, when a large square pmupgg engraved into some cherry, it might have a very uniform appearance; the area engraved will be smooth with little variation in height. However, in the event 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