Laser engraving provides a unique method of etching all types of glass items. From vases to wine glasses and bottles, you can use this process customize stunning designs on any glass product. Most wineries and glass companies utilize laser-engraving machines to print logos and other brand features on their products. One great advantage obtained from this is the ability to mark bottles that are already filled. When the laser machine comes in contact with the glass surface, it does not etch too deep. This ensures that the item is not damaged in the process. Today we look at some tips and tricks that can help you get the best quality when engraving glass.
Determine the Best Engraving Speed
Engraving requirements for flat glass products are very different from bottles. Flat glass has consistent hardness, which results in consistent images. Bottles have inconsistent soft and hard spots that make the engraved image to appear inconsistent. To compensate for this difference, it is advisable that you engrave at medium speed, but using high power.
Check the Type of Glass
Different engraving methods are great for different types of glass. Before laser etching your product, ensure you understand what type of glass it is. For instance, crystal glass may not be ideal for laser engraving because of its high lead content. Lead retains heat from the engraver resulting in uneven images. Test each glass material to know which settings to use. Through this test, you will also be able to determine the laser etching machine that is best suited for the job.
Increase the Grayscale Percentage
During the etching process, engravers use the grayscale feature to eliminate black shades from the image. A grayscale percentage of 80 is commonly used to achieve smoother surfaces and edges because the engraver does not go as deep as it would at a more intense shade.
Lower the Resolution
Low resolution etching produces the best results on any glass product because the dots are placed far from each other. When people look at the engraving, they will not be able to tell whether a lower DPI was used. You may combine this feature with Jarvis dithering to make your image look exactly like a high resolution image.
Mask the Surface
Although masking is optional, it is highly effective in preventing chipping and uneven surfaces. The process of masking involves placing a thin sheet of paper on the glass surface before etching. For best results, ensure the paper covers the entire surface.
There are several other tricks that are less popular but helpful such as using dish soap and polishing. These tips are especially important when you are engraving a product for a customer because you want to deliver the best.