How Is 3D Engraving Done With A Laser?
In the days of old, if a person wanted a 3d engraving as a wall plaque or display, they would have to pay outrageous amounts. Thanks to technology and the development of the laser the prohibitive costs have been brought down to a level that more of the world can afford.
Also, with lasers getting smaller all the time, and computers becoming more powerful, the realism, and accuracy in the rendered piece has become fantastic. In the recent years there have been advances in the area of 3d technology that allow an artist to take a scanned image and convert it, to create a set of instructions for a laser engraver. The image used for the instructions is similar in appearance to a greyscale image.
There are several types of 3d laser engraving tables, the most common being X-Y Table, this one the object being engraved is stationary, this type of laser draws in vectors. Another type involves mirrors that focus the laser and both object and laser are on one place, this type of laser draws in vectors and rasters both.
The focal point of a laser can be smaller than 0.5 millimeter, and depending on the material engraving, will either fracture small pieces from the surface (called glass up at times,) or portions will be vaporized. Resulting waste material and noxious fumes will be removed using vacuum pumps and fans.
The types of material that can be worked with is almost endless, but there are exceptions, and some materials can provide a potential for overheating the laser or even catching fire. There are very elaborate cooling systems and methods used to prevent mishaps though. Pulsing the laser being the most common, along with fans. There are many other man-made and natural materials that are used for 3d engraving into with a laser.
Tags: Tags: 3d engraving, 3d laser engraving, Engraving Machines
