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Signage and Marketing Ideas Centre

Marketing Ideas Centre / 6. What is ? /
What is Laser Cutting ?
Author Message
Wendy
Member
#

What is Laser Cutting ?

As imagined in movies, laser cutting is a concentration of heat, passed thinly in a controlled definition.

Effectively, laser cutting can replace engraving, gas cutting and water jet cutting.

Advantages of laser cutting are
1. Fine detail can be achieved without further processing.
2. Wide range of materials can be processed (cut).
3. Protective barriers (such as over laminate tapes) can remain on the surface area. This eliminates scratching, secondary processing faults and transport.

Laser cutting is an excellent choice for cutting Acrylic / Perspex. The cut edge results appear smooth and at 90 angle to surface. This cut angle allows perfect nesting or 'shelling' of multiple sign colors, letters etc.

Born amongst CAD (computer aided drawing), CNC routers and Sign Plotters, Laser cutting is latest technology manufacturing and requires certain understandings to achieve effective signage.

1. Path Direction and Minimum Nesting
2. Depth Controls
3. Material Knowledge
4. Lift and Drop (Start Points)

Each of the letters in laser actually stands for a word. Light Amplification by the Stimulated Emission of Radiation

Wendy
Member
# - Edited by: Wendy

Here is a video of Stainless Steel Being Cut. The sparks are when the laser beam hits the holding pegs.



Here is a video of the Laser in action



Wendy
Member
# - Edited by: Wendy

From the Video above, this is the cutting path plan at Pre Issue stage.

image

This is what the finished sign looks like when the rear translucent acrylic has been fixed.

image

myhelp
#

The term "LASER" is an acronym for Light Amplification by Stimulated Emission of Radiation.


How laser cutting works.

Laser cutting works by directing the output of a high power laser at the material to be cut. The material then either melts, burns or evaporates away leaving a cutting edge.

Minimum Distance between objects ready for laser cutting.
As a guide: The thicker the material to be laser cut the wide the free space should be between letters, object and shapes or other lines or spacers.

* Set a minimum 8mm for All objects and lettering, regardless of size or thickness, grade of materials to be laser cut or other when you are making signs and signage.



Cutting Techniques

One of the many advantages of fabricating with a laser is the ability to engrave and cut in the same job. When creating jobs for laser cutting in your layout program, you must first understand that the difference between a raster and vector line is the thickness of line. Most laser systems view a line thickness that is .01mm. or less as a vector line. See our Ezine on Vector drawing and Bitmap Comparisons.

Advantages of laser cutting over mechanical cutting such as router cut signs or saw cut signage vary according to the situation, but important factors are; lack of physical contact, since there is no cutting edge which can become contaminated by the material or contaminate the material, and to some extent precision, since there is no wear on the laser. Disadvantages of laser cutting may include the high energy required.



What is laser cutting?

Capabilities that providers of laser machining services offer include size and capacity considerations and materials processed. Size and capacity choices include micro machining, less than 5mm. Micro machining is precision machining of integrate detail on small parts. Materials processed by providers of laser machining services include exotic metals and alloys, ferrous metals, nonferrous metals, precious metals, glass or ceramics, plastics, rubber, sapphire or quartz, and stone or marble or granite.

Industrial laser cutting is a CNC controlled, non-contact cutting tool process that allows quick, accurate cutting with a narrow kerf (cutting groove). Laser types for CNC laser cutting include CO2 lasers. Laser cutting is a very versatile operation that has short setup times, and can be used to cut a wide range of materials of varying hardness and composition. Some of the advantages of laser cutting are high accuracy, cutting of unlimited and complex shapes, clean cutting that requires little or no finishing and generates a minimum amount of heat, and distortion-free cutting.

Laser cutting can be used with a wide range of materials. In addition to stock metals, stone, plastics and rubbers, laser cutters are often used on exotic metals and minerals that would quickly dull or damage conventional blade or wire cutters. These included such items as hardened ceramics and precious gemstones.

In addition to straight laser cutting, many laser cutting job shops can provide a wide range of custom laser cutting services. Some of these include laser cutting and stencilling, laser cutting drilling, and laser welding. While similar to laser cutting, these secondary operations involve more intricate or precise marking abilities. Generally, the laser types used are the same as straightforward laser cutting.

Anonymous
#

Laser cutting is a technology that uses a laser to cut materials, which is used in the production line and is typically used for industrial manufacturing applications.

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