When using the 3D Grayscale Embossing function, it is recommended to use wood and metal with low hardness for a better embossing effect. Be sure not to set the engraving power and depth too high, as this can cause the wood materials to become charred.
What Design is Suitable for Laser Embossing?
To achieve the 3D Embossing Effect with laser, not all images are suitable. You need Depth Maps.
The Depth Map refers to a picture or image containing information about the distance between the surfaces of objects and the viewpoint in the realm of 3D computer graphics and computer vision.
In grayscale depth maps (one of the most widely used types of depth maps), shades of gray indicate different depths: darker areas are the furthest from the viewpoint, while lighter areas are the closest.
The laser uses this information to vary the engraving depth, making the lighter areas higher or raised parts and the darker areas lower or recessed parts, thus creating a three-dimensional appearance.
(A depth map of the Squirrel)
The squirrel above is a grayscale depth map. The white-gray pixels (lighter areas) represent the part of the scene that is closest to the viewpoint, and the black-gray pixels (darker areas) represent the part of the scene that is furthest from the viewpoint.
In this case, the parts of the scene that are closest are the face and ear of the squirrel. The grayscale gradient in between illustrates that the neck and body are a bit further from the viewpoint, the legs even further, and the tail of the squirrel the furthest from the viewpoint, or furthest point of the image.
How to Get Depth Maps
- You may obtain depth maps from the internet and import them into LDS.
- Generate depth maps using third-party software and subsequently import them into LDS.
- The USB flash drive provided with the LaserPecker LP5 contains some embossing project files.
How to Start Laser Embossing in LDS Effect Settings
Select the pattern, select "Grayscale Embossing" in "Effect", and then choose "Convex Engraving" or "Concave Engraving"
Concave Engraving & Convex Engraving
Concave engraving refers to a laser engraving technique that makes use of laser ablation to remove material in the shape of a desired pattern or design. This process produces a design that is indented relative to the surface of the surrounding, untouched material.
Convex engraving refers to a laser engraving technique that also makes use of laser ablation to remove material. Unlike concave engraving, convex engraving does not directly engrave the design but instead engraves all the areas around the outline of the design. This produces an embossed design that is raised above the surrounding engraved areas.
Setting the Number of Layers
The number of layers refers to the number of embossing layers applied. Increasing the number of layers enhances the embossing effect but also extends the processing time. Conversely, fewer layers reduce processing time but may result in a less pronounced embossing effect.
Additionally, increasing the number of layers deepens the laser engraving on the material surface. You can specify any integer value from 1 to 254 for the number of layers.
Previewing the Engraving Effect
You can preview the engraving effect by selecting different numbers of layers. This lets you see how the chosen layer count will affect the final result.
Layer Number: 50
Layer Number: 100
Layer Height
Layer height refers to the thickness of each layer, with valid values ranging from 0.01 to 1 mm. It also represents the distance the electric stand moves downward after engraving each layer.
Precautions before Starting the 3D Grayscale Embossing
Use a USB Flash Drive
Since embossing files are often large, it's recommended to use a USB flash drive for 3D Grayscale Embossing. To minimize waiting time, import the .lpb format file onto a USB flash drive beforehand. This method ensures efficient and stable embossing operations.
Use a High-speed Fan
We recommend using a high-speed fan to keep the engraving surface dust-free. During the embossing process, metal dust or smoke may be generated depending on the material being used for engraving.
To maintain a clean engraving environment and achieve better results, we recommend placing a high-speed fan next to the engraving material. This will help keep the material surface dust-free for an extended period.
Use the L-shaped Positioner or other Positioners
We recommend using a positioner to prevent long-term displacement caused by vibration or carelessness in the engraving process.
What to Do After Laser Embossing
1. Treating Wood After Embossing
Using a 1064 nm laser for a secondary engraving with low power and depth helps clean and remove any burnt yellow residue on the surface.
2. Treating Metal After Embossing
Avoid touching the engraved metal immediately, as it will be hot. Take care to prevent burns.
Due to the 20W power output of the LP5 fiber laser, it may not achieve the same embossing effect as a high-power laser. Using a 1064 nm laser for a secondary engraving with low power and depth can help clean residue on the surface and enhance the embossing effect.
For brass, use a professional sulfuric acid cleaning agent at a specific concentration for surface soaking.
For other metals, polish the surface after embossing to achieve the best effect.