Co2 Laser Engraver

question concerning co2 laser engraving ??????

We would like some information on laser engravers... We researched them, but found them very costly ( beyond our immediant means at this time )... Does anyone know if these type of engravers are available on a lease basis ??? ANY information on lasers and availability will be most appreciated !!!!

e-mail me. I know a company who will help you,but will not post his information on here.

The Co2 Laser $88.86 No Synopsis Available

Beretta 92FS Laser, Fits CO2 Pistol $31.19 Laser Fits Beretta 92FS CO2 pistol Mounts on accessory rail under barrel

Walther CP99 CO2 Gun + Laser $233.99 8-Shot Semi-Auto

Walther CP99 Compact & Laser $115.14 18-Shot CO2 BB Repeater with Blowback!

Electric Engraver $14.29 Engraver Use like a pencil to write, draw, engrave on wood, metals, plastics, and glass Variable stroke adjustment for heavy or fine engraving Tungsten carbide tip for long life and clean lines 6' cord Brand #: Wen Products 21B UPC: 044459500216 Keywords: engraver electric

Nature's Engraver: A Life of Thomas Bewick $10.79 Nature's Engraver: A Life of Thomas Bewick

Daisy Powerline 5503 CO2 BB Gun Combo $155.99 Gun, Laser, Dot Sight & More! Blowback

CO2 Cartridges $10.94 CO2 Cartridges Mosquito Magnet CO2 Cartridges

Daisy PowerLine 5503 CO2 Blowback Pistol Kit $125.99 The 5503 Pistol Kit has a 15 shot capacity clip and includes the Daisy Acculaser laser sight the new Daisy LED Light and a Red Dot Scope for hours of shooting fun. The manual trigger block safety blade and ramp front sight and open rear sight are all standards Daisy is known for. This kit also includes three 12 gram CO2 cylinders. Features *ACTION: CO2 Semi auto blowback *SIGHTS: Blade and ramp front open rear *SAFETY: Manual trigger block *MAX. MUZZLE VELOCITY: 430 fps *OVERALL LENGTH: 6.8 inches *CALIBER: .177 cal. (4.5 mm) BB *BARREL: smooth bore steel *MAX. SHOOTING DISTANCE: 209 yards *CAPACITY: 15 shot clip

Carbide Engraver Tip $6.81 Carbide engraver point Used for normal and engraving applications. creates fine lines and deep grooves For use with Dremel engraver model No. 290-01 Brand #: Dremel 9924 UPC: 080596099244 Keywords: carbide engraver tip point electric

Dremel Engraver Electr - DRE290 $25.99 MPN #DRE290. Dremel Engraver Electr. Most Electrical and Wiring products are available for in-store pickup from Advance Auto Parts.

Burton CO2 EST Snowboard Bindings Black $319.95 Powerful precision, in bounds or out. The C02 EST™ is like strapping yourself into a Tomahawk missile. Split-second decisions are made possible with the ultra-light carbon-blended fuselage while the spring-like suspension of the SuperBED™ dodges and deflects shrapnel with laser precision. Add the forget-it’s-there feel and mind-reading control of an anatomically shaped strap and hi-back, and the C02 EST reacts before anything else has a chance to.Key Features of The Burton CO2 Snowboard Binindgs: BASEPLATE: NEW 50:50 Carbon Fiber/Nylon Composite EST™ HI-BACK: NEW Dual-Component Canted Living Hinge™ Real Mesh Hi-Back STRAPS: NEW Cored Ultrastrap Air™ and NEW Gettagrip Capstrap™ BUCKLES: Dual-Component Smooth Glide™ Buckles CUSHIONING: Removable SuperBED Cushioning System with B3 Gel Heel Cushioning Response: 8 Rides Exclusively with Burton Boards Featuring the Channel

Umarex EBOS .177 Cal. 88g CO2 BB Air Rifle Black $134.95 The Umarex EBOS (short for Electronic Burst of Steel) is a tactical BB rifle that allows you to shoot in 1 4 or 8 shot bursts. The high velocity 540 fps. The top and bottom tactical railing lets you customize your gun with any point sight flashlight or laser enhancements that you would like to add. The gun is powered by a single 88 g CO2 capsule. The ergonomic pistol grip and removeable fore grip give you the ability to shoot comfortably all day long. Features: * 1 4 or 8 shot burst * High velocity 540 fps (single shot) * Electronic trigger control * Powered by 88g CO2 Capsule * Ergonomic pistol grip * 2 sided tactical railing * Adjustable rear sight * 400 shot reservoir * Requires 88g CO2 and 6 AA batteries (not included) Specs: * Caliber: 0.177 * Action: Semi Auto * Power: 88g CO2 6 AA Batteries (not included) * Ammo Capacity: 400 round reservoir feeds into 24 round built in magazine * Barrel Length: 9.7" * Brand: Umarex * Optic Compatible: Picatinny Tactical Rail top and bottom * Rear Sight Type: Adjustable * Front Sight Type: Fixed * Trigger Type: Electronic * Ammo Type: BBs * Total Length in Inches: 24.75 * Velocity FPS: 540 (single shot)

CO2 Tank $38.66 9oz co2 cylinder Refillable CO2 tank for use in the JacPac CO2 power system Can also be used with paintball markers 9 oz. CO2 tank Brand #: Jac Pac J-6901-98 UPC: 060761901985 Keywords: jac pac co2 power system refillable tank c02 cylinder

Crosman Tactical C11 Semi Auto Co2 BB Air Pistol $74.95 .177 Caliber CO2 Powered Semi automatic BB Pistol. Includes compensator and quad rail for mounting multiple accessories. Grip slides back for easy loading of CO2. Spring activated BB clip drops out with the push of a button. Features a Class IIIA laser sight. Features: *Model Number: TACC11. *Power Source: CO2. *Caliber: .177 (4.5 mm). *Velocity: Up to 550 fps. *Weight: 1.4lbs. *Length: 8.5in. *Barrel Material: Steel. *Front Sight: Fixed Blade. *Rear Sight: Fixed notch. YOU MUST BE 18 YEARS OR OLDER TO BUY ANY AIRSOFT AIR GUN OR AIR RIFLE IN OUR STORE. It is the consumers responsibility to verify that Airsoft or BB Guns are legal in your state and local jurisdiction. Zephyr Sports is not responsible for guns confiscated by local law enforcement. Adult signature will be required by the shipping carrier for all shipments that contain: air guns or airsoft guns. WARNING: Not a toy. Adult supervision required. Misuse or careless use may cause serious injury or death. This airgun is intended for use by those 16 years or older. Read all instructions before using. Buyer and user have the duty to obey all laws about the use and ownership of this airgun. You and others with you should always wear shooting glasses to protect your eyes. BE CAREFUL SHOOT SAFELY.

Walther PPK/S Laser $19.19 Fits Walther PPK/S CO2 BB guns. Why buy a brand new air gun if you can buy just a laser and get a totally new feeling?

Crossfire Replacement Co2 Valve $4.95 A universal replacement CO2 valve.

TUBELESS TIRE PLUGGER WITH CO2 $48.99 TUBELESS TIRE PLUGGER WITH CO2

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The Working Process of CO2 Laser Engraver and Cutter

Laser Marking Steers a New Course in Manufacturing

As the technology of laser marking has advanced, new markets have evolved to take advantage of increasingly faster marking speeds as well as greater marking precision and imaging capabilities. Continuing developments in laser-cavity design, beam-steering and focusing optics, and computer hardware and software are expanding the role of the systems.

Steering the beam
Of the available marking technologies, beam-steered laser marking systems provide users with the greatest amount of image flexibility in a fast, permanent, noncontact marking process. As manufacturing processes become more automated and after-sale tracking more prevalent, laser markers are frequently the only method available to produce individually unique, permanent images at high speed.

Beam-steered laser marking systems usually incorporate either a CO2 or Nd:YAG laser. The CO2 laser emits a continuous-wave output in the far-infrared (10.6-um wavelength) while the Nd:YAG laser emits in the near-infrared (1.06 um) in either a CW or pulsed mode (1 to 50 kHz). The Nd:YAG laser is also unique in its ability to produce very short, high-peak-power pulses when operated in the pulsed mode. For example, a typical 60-W-average-power Nd:YAG laser can produce peak powers on the order of 90 kW at 1-kHz pulse rate.

The delivery optics consist of either a simple focusing lens assembly or a combination fixed upcollimator and flat-field lens assembly. In either instance, the laser beam is directed across the work surface by mirrors mounted on two high-speed, computer-controlled galvanometers.

The simple focusing assembly offers the advantages of low cost and fewer optical components and is routinely used with CO2 lasers. The flat field lens design, though more expensive, maintains the focal point of the marking beam on a flat plane for more consistent image characteristics throughout the marking field. The flat-field lens also produces higher power density on the work surface than the simple focusing assembly due to the shorter effective focal length. The flat-field lens design is always preferred for high-accuracy and high-image-quality applications and is usually incorporated with Nd:YAG lasers.

Both designs provide the user with a selection of lenses that establish both the diameter of the marking field and the marking-line width. Longer-focal-length lenses provide larger working areas, but the line width is also enlarged, thus reducing the power density on the work surface. The user must compensate by either increasing the laser output power and/or decreasing the marking speed which usually consists of two lenses and may be placed anywhere in the beam path before the focusing lens. A beam expander often is used instead of extending the beam path approximately 10 more feet, in which the beam expands through its inherent tendency to diverge as it exits the resonator cavity. A spatial filter inserted within the beam expander produces the best mode quality in close-coupled systems, by passing the beam through a small aperture.

The last optical element that a laser beam encounters is the focusing lens. With CO2 lasers, this lens is usually made from one of several materials: Zinc selenide (ZnSe), gallium arsenide (GaAs) or germanium (Ge). ZnSe, a dense, yellow material that is transparent to visible wavelengths, is by far the most common of these materials, and it allows a low-power, HeNe laser beam through for alignment purposes. This is a great advantage over GaAs or Ge which are opaque to light from the visible portion of the spectrum.

Nd:YAG lasers almost always employ beam expansion, usually in the 2x to 5x range, because of their initially small beam diameters. Spatial filters for CO2 lasers must be external, but those for Nd:YAG lasers can be located inside the laser cavity itself, and many different sizes are available for mode selection.

Nd:YAG lasers employ optical glasses such as BK-7 or fused silica for lenses. The 1.06-um wavelength of these lasers is close enough to the visible spectrum to permit adaptation of standard optical devices with the correct AR coating to direct the laser light. For example, microscope objectives can deliver Nd:YAG laser light to the surface of VLSI circuitry for micromachining of conductor paths. As discussed earlier, delivering a Nd:YAG laser beam with fiber optics offers incredible advantages over fixed-optic delivery. The fiber advantage is unique to Nd:YAG lasers and has created an enormous growth in their use for industrial materials processing.

Fiber optic delivery for Nd:YAG
The use of fiber delivery with YAG lasers is so extensive in the industry that it should be discussed in more detail. Approximately 90 percent of new Nd:YAG welding installations involve fiber optic delivery. Because the 1.06-um wavelength is transmitted by glass optics, it can be used in standard fiber optics. Conventional beam delivery is extremely cumbersome, prone to misalignment and contamination to the optics, and can be very expensive due to custom layouts. Fiber provides a real answer to all of these problems. The benefits are:

• Fibers deliver laser energy over distances which, in practice, would be impossible to achieve using conventional optics. Distances of up to 50 meters are achieved quite routinely.
• Stability and accuracy are improved since only the final focus optics need to be held in an accurate relationship to the workpiece.
• Most applications can be handled with standard delivery hardware (avoiding custom design).
• Fibers are flexible and, within the limitations of minimum bend radius, can follow any desired route to the workpiece.
• The workpiece may be held stationary while the fiber and output optics move during processing making them the ideal delivery system for use with robotic manipulation.
• Fibers make the design of time and energy sharing beam distribution systems a practical possibility. The use of such systems significantly increases the flexibility and versatility of individual lasers by allowing them to address multiple workstations or produce multiple simultaneous outputs.
• Access to the laser head for routine maintenance is improved since the positioning of the head is not dictated by the beam delivery system.
  The low-cost fiber can be delivered to areas that are dangerous because of explosives or radiation while the laser head is located in a non-hazardous area.
• Spot size at focus does not alter with changes of average power.

The optics of fiber delivery are simple and straightforward. Fiber optics used for laser delivery are typically step-index fibers. This type of fiber consists of an optically uniform core between 200 and 1500 um in diameter, surrounded by a thin cladding which has slightly different optical properties.

There are several options to fiber optic beam delivery. The first is single-fiber delivery from a single laser. This type of delivery is generally used for a dedicated production process or in development labs where moving the beam delivery to other workstations is infrequent. The choice of a single-fiber delivery is easily justified by its ease of use, ease of integration to workstations, and the capability for upgrading the system with other options in the future. Other reasons for single-fiber delivery are for robotic delivery of the laser beam and other multiaxis systems where conventional delivery would be a nightmare. With fibers, the output housing is mounted on the final-motion component so integration is incredibly economical and simple.

Another fiber delivery option is time sharing, whereby all of the laser output can be directed into any one of the several fibers on demand. A single laser with this system can provide laser energy to several different workstations switching among them at up to 40 Hz. These systems are typically used for laser welding at many different workstations, or to deliver the laser beam to separate areas of one large assembly station.

The last option is termed energy sharing. These systems divide the laser output and send the energy into several fibers at the same time. Mirrors skim portions of the beam from the laser and divert them into the input housings for each of the fibers.

The relative extent that each skimming mirror is moved into the beam path determines the sharing ratio. Typical energy-share systems can split the beam into as many as four fibers. These systems are used to weld many parts simultaneously, in order to increase throughput, or to eliminate the part distortions that often result from sequential welding of a single assembly.

The system computer creates marking images by sending beam-motion signals to the galvanometer drivers while simultaneously blanking the laser beam between marking strokes. The motion of the galvanometer-mounted mirrors directs the marking beam across the target surface much like a pencil on paper to draw alphanumeric and graphic images.

Laser selection
Laser marking uses the high power density of the focused laser beam to generate heat on the work surface and induce a thermal reaction. A readable, contrasting line is produced by increasing the target surface to annealing temperatures, the melting point or to vaporization temperatures. Annealing and melting are employed to induce a contrasting color change on a wide variety of metallic's as well as plastics, ceramics and other nonmetallic's. The fastest marking speeds are obtained by increasing the temperature to the vaporization point to engrave metallic's and many nonmetallic's.

The near-infrared wavelength of the Nd:YAG laser is well suited to most metallic's and many plastics. The Nd:YAG can anneal or melt in both the CW and pulsed mode and can provide the necessary peak pulsed power to engrave. With many materials, the Nd:YAG can simultaneously engrave the surface and induce a contrasting color change in the engraved trough.

The far-infrared wavelength of the CO2 laser is compatible with plastics, ceramics and organic materials. However, without the high-peak-power capability required to achieve vaporization temperatures, the CO2 laser is limited to annealing or melting the surface.

Advantages
Beam-steered laser marking offers several advantages over other marking methods. Most apparent is the unique combination of speed, permanence and the flexibility of computer control. Although other technologies can provide one or two of these attributes, no other method offers all three to the same degree.

Many users also benefit from the noncontact nature of laser marking. The only force applied to the part during the marking cycle is the very localized thermal effect of the laser beam. No additional physical force is applied, with the exception of any appropriate part-handling motion designed into the system. Silicon wafers, silicon disk drive read/write heads and many medical devices are examples of components that are too fragile for any type of mechanical marking. In addition, laser marking provides the permanence necessary to satisfy image-lifetime requirements, while printed marking does not.

Laser-marking systems also excel at creating intricate graphic images. Nd:YAG lasers can produce marking-line widths on the order of 0.001 inch or less, which, when combined with marking resolution of 0.0002 inch/step, can produce images with much more detail than mechanical contact or stencil systems.

Regardless of the specific process justifications for incorporating laser marking, the application of the technology can result in significant cost savings. With operating costs for the Nd:YAG system, users have reported cost savings of greater than 90 percent and associated reductions in quality control and inventory expenses.

As manufacturing industries continue to automate their manufacturing processes, incorporate aftershipment traceability, reduce manufacturing cycle times, apply more sophisticated graphics and develop products requiring new marking techniques, the laser-marking manufacturers will continue to improve the power, speed, image-generation capabilities and user-friendliness of their products.

About the Author

Richard Stevenson is the Sales Director for Control Micro Systems, Inc. a manufacturer of beam-steered laser marking systems. He has published and presented numerous technical papers and articles on laser marking in trade publications. For information on Plastic Welding, Engraving, Cutting, Etching or Marking call 407-679-9716 or email sales@cmslaser.com