July 30, 2009

How To Choose A Laser Engraving System

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Laser engraving is a growing method of product identification, decoration and personalization. There are several types including CO2 laser, fiber lasers, YAG lasers and any number of other wavelengths. This article will address the checkpoints for selecting a flatbed CO2 laser engraving system.

First of all it should be known that there are a number of very reputable vendors in the market, any of which can supply you with a good, reliable machine. However there are also some very poor pieces of equipment available also.

CHECK POINT #1 – Know who you are dealing with. Do your homework and research the company’s reputation not only related to the equipment itself but also how they are known to take care of their customers after the machine has been installed. Don’t believe anyone who tells you that there won’t be little issues with the lasers from time to time. How the company deals with service is critical.

Often people choose equipment only on prices and don’t weigh the value or return on investment. For an example if the laser takes two minutes to do a job but you need it done in one minute, regardless of the cost it will take twice your time and resources to complete the project. If you amortize that formula over a given period of time you can calculate what your ROI will be based on a certain number of parts.

CHECK POINT #2 – Consider the cost and what you can afford, but don’t forget about the payback. If you spend $7,000 and the machine can’t do the job, what you have really done is wasted $7,000. Conversely if you spend $14,000 and it can do the job, plus do more than you expect, the machine pays for itself in short order.

Flatbed lasers come in a myriad of different configurations. You can choose from engraving area, laser power (referred to as wattage), air cooled versus water cooled, linear marking speeds and many other smaller but critical decision points. Consider your application carefully when making your decision.

CHECKPOINT #3 – Make sure the laser is capable of what you are planning to do now AND what you might do in a year. If your budget allows that you can afford the next higher wattage machine or the larger engraving area make that commitment. None of us go in to business to not grow. We all expect increased business, so try to position yourself to take advantage of that, when the opportunity arises.

Consider the environment where the laser will operate when making your decision on a laser engraver. Some material such as acrylic and other plastics, rubber, wood etc…put of smoke, debris and odor that can be pretty bad and in some cases toxic.

CHECKPOINT #4 – Select a company/machine that has a range of exhaust systems to choose from. Consider that there could even be local EPA regulations that restrict expelling fumes into the air, and that you may need a self-contained, filtered exhaust system. Plus if you have ever smelled rubber burning you could have some really unhappy neighbors if you don’t capture the fumes.

These types of lasers all output like a printer, with a printer driver package similar to the one on your desk. These packages have varying levels of sophistication and tools that help you optimize the lasing experience.
CHECKPOINT #5 – Make sure you get a demonstration of the printer driver software so you know what you are getting into. The basics should include a simple and straightforward user interface, optimization tools and the ability for the software to be configured for various models of equipment. Most company representatives will be happy to sit down with you and provide a detailed demonstration.

The last thing I will mention has to do with marketing you capabilities. Laser engraving is growing all the time and even though it is a great and fun business to be in, it is competitive. Make sure you understand that you will need to market your services effectively. Have a “go to market” strategy and a solid business plan. Most good sales people in our business can discuss how much to charge, new markets to chase and tricks to make you more efficient.

CHECKPOINT #6 – Go into this purchase with your eyes wide open. Learn everything you can from your sales person, the internet and any other research venue. Draw on the experience of the selected company’s marketing and technical people and above all other things play to win, don’t play not to lose!

In conclusion, if I had to make one overriding statement that would be shop in a systematic fashion and don’t impulse buy. Take the time to make a decision you will be happy with six months down the road.

Understanding the Laser Engraver

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The actual technology that goes into todays laser engraver began to be developed in the early 1960s. It was back then that scientists and research engineers discovered that a high energy light source could be created, focused and used for various means.

Creating Light From a Gas

The gases that are used to create the original light source have a lot to do with the how a laser performs and by the way CO2 gas is used in laser engravers. So how is light created from a gas? It’s quite simple. They are created by agitating the molecules in the gas in an enclosed container, just the same way that light is generated from a neon light bulb.

A Far Cleaner and Safer Engraving Process

Laser engraving is often referred to a laser etching and unlike most all conventional methods of engraving or etching, no mask is required. That’s because unlike other methods of etching, no harsh chemicals or high temperatures are used in the laser engraving process.

The Capacity For Delicate Precision Work

Laser engraving also has many other inherent benefits when compared to standard engraving techniques. For instance, the actaul beam lends itself to far more precision work. Thus even very small and delicate items can be etched on with a laser engraver.

Other Benefits Of the Laser Engraving Process

Unlike other standard methods of engraving or etching, a laser engraver generates no dust or leaves no chemical residue. Also engraving on uneven surfaces is far more easily done by laser engraving. Thats because a light beam is far more easy to manipulate around and across these types of surfaces.

Transferring Images With a Laser Engraver

Amazingly, new technologies have been developed that allow people to automatically transfer images to surfaces with a laser engraver. The image is simply loaded into the engravers memory and with simply touch of a button the image is automatically engraved as it is on the surface of an object.

Significance of Laser Marking on UID Registration Products

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It is mandatory for the UID registration products to have unique identification marks on them before they are submitted to the UID registry. The UID laser marking techniques bear huge significance for the marking procedures. As per the mandate of DoD the product identification must be directly as well as permanently marked on the surface of the part. As direct part marking and permanent identification are crucial to enhance traceability of the items, a reliable marking procedure is worth considering. Among all the identification marking technique for the UID registration products, UID laser marking is regarded as the most efficient and accurate one.

UID Markings for UID Registration Products

It is essential for the UID registration products to have the UID labels that comply with the UID policy. The marking is done with 2D data matrix codes that are encrypted to the surface of the products. The data of the UID labels are encoded with a specific language and format to be etched on to the surface. While scanning the data of the items, the codes are decoded with the help of Automatic Identification Technology. The coding and decoding technology of the laser marking system ensure highest level of security for the products.

Advantages of Laser Marking for UID Registration Products

The UID mark validation and the UID quality verification that comply with MIL-STD-130M have to undergo several techniques. To ensure that the marks on the UID registration products are legible for the life of the product, the DoD has implemented UID policy for the contractors. The immense popularity of the laser marking procedure is due to its benefits over the other methods of labeling.

The data required for the marking include enterprise identifier and unique number of the items. The higher resolution capacity of the UID laser marking enables embedding of more data in the UID mark.
Other marking techniques such as chemical etching, silk screening, mechanical engraving, pad printing, and some of the other low-quality methods are can not be considered as environment-friendly methods. On the other hand laser marking is surely an organic option to all these things that reduces carbon footprints.
Laser engraving and laser marking are exclusive techniques of identifying as well as decorating the UID registration products.
Other benefits of laser marking for UID registration products

The 2D data matrix symbols help the DoD in

boosting the inventory accuracy
sourcing the items on property accurately
enhancing access to lifespan of items and part history during design
decreasing workforce burden through increased productivity and efficiency
reducing inventory management cost
one of the most noteworthy aspects of laser marking is it can imprint the marks on any surface including auto parts, glass, plastics, pharmaceutical tablets, stainless steel, crystal, et all.

The UID verification of the UID registration products are changing faster and becoming more complex. Hence, the contractors and the suppliers need to understand the mandate of the DoD to comply with the UID program. UID laser marking can provide end to end solution for the requirements of UID registration.

Todays New Laser Cutters For Small Shops

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It’s a fact that a laser that is powerful enough can cut through virtually anything. Also because laser cutters generate no friction, they also generate no heat while they are cutting, thus they require no coolant or cutting oil.
 
 Far Less Power To Operate
 
 Laser cutters also create no dust when they cut and create a cut line that is almost negligible. Also newer lasers cutters require far less power to operate than lasers of the past and are also more compact and mobile.
 
 Smaller, More Affordable Laser Cutters
 
 These are just a few of the reasons why laser cutters are finding their way into smaller shops and businesses that in the past would have found them far too expensive to afford. So why would a shop owner acquire a laser cutter when there are already conventional cutters in the tool cabinet?
 
 Cut Clean Lines Through Odd Shaped Objects
 
 One thing that laser cutters can do that conventional cutters can’t is do clean cuts through on odd shaped objects. Also being that laser cutters generate no dust, complex conversions and adaptations are incredibly quicker and easier to do.
 
 Lasers For Hole punching and Engraving
 
 This means that complex pieces of delicate machinery can be cut without being disassembled. Also clean straight lines can be cut directly through, no matter what shape an object is or what it is made of. Lasers are also great for hole punching and engraving and once again, they leave no dust or metal shavings in the process.
 
 Create images and Wording On Any Type Of Material
 
 Also new laser engravers can engrave words and images on virtually any type of material. This is why small shop and business owners are  now doing custom mechanical and creative work that they never would have dreamed possible in the past.