co2 laser frequency setting

They are also quite efficient: the ratio of output power to pump power can be as large as 20%. Full Spectrum Laser 6216 S Sandhill Rd Las Vegas, NV 89120 702-802-3100 Brand of Acrylic 2. Each of these bands is actually composed of about 40 different vibration/rotation transitions with frequencies … There are a whole host of materials that a CO2 laser cutter can cut, etch or mark – but some – due to the material surface reflection – just won’t work (aluminum is an example). Fusion cutting is another standard process used in metal cutting, and it can also be used to cut other fusible materials, such as ceramics.. The greater the marking speed, the higher the required frequency setting. However, there are also applications in which deliberate defocusing is desired. Look at the square with a magnifying glass. The z-offset describes the focus setting. Laser Process Setup 1. In marking metal and plastic,There is a setting parameter range for reference to test ,Speed 100-2000 adjustable,Power 30-80 adjustable,Frequency 5-30. Fig.1 The laser beam melts the workpiece while the cutting gas blows away the molten material and slag in the incision. Email adress Password. Login. Get All the Facts About Fractional CO2 Laser Treatments Frequency: 1% Focus: .05” The contrast / brightness of marks achievable on the fiber laser are excellent and can often be much brighter than marks from a C02 laser. The carbon dioxide laser (CO2 laser) was one of the earliest gas lasers to be developed. Frequency (Hz, PPI): The frequency parameter specifies the number of laser pulses per second. In flow-through lasers, a continuous stream of CO2 and nitrogen is excited by the plasma discharge and the hot gas mixture is exhausted from the resonator by pumps. The filling gas within the discharge tube consists of around 10–20% carbon dioxide (CO 2), around 10–20% nitrogen (N 2), a few percent hydrogen (H 2) and/or xenon (Xe) … If the engraving area is small, the laser may not have sufficient distance to get up to the full speed, so you may need to reduce the power slightly if you want a shallower engraving on small jobs. The finest frequency selection may also be obtained through the use of an etalon. If you have other settings you’d like to suggest, please send an email to design_help@ncsu.edu with the details. I'm now familiarizing myself with many different materials and attempting to test and document the best settings for quality. Taking the fiber laser out of focus by +.06” - .09” broadens the beam and produces a very bright mark on anodized coating. Some parts cut no problem, others not at all. Power (%): 30-40 (For 40 watt laser) Speed (mm/s): 300 ; Interval (mm): 0.4 (This interval allows you to distinguish between engraved lines) Engrave the image. Email Subscribers. Table Setup 2. Both materials present the same feature with regard to frequency. YES! Ahigher chosen speed (e.g. Note that cutting and engraving speeds are not comparable. So if you turn the laser on, with a high frequency (5000 rate, 1000 ppi) that turns the laser on CW (Continuous Wave), then you will get pulses that turn on and give you 50 watts. All settings noted use the default resolution which is 500 or 600, depending on the make of your laser system. We have summarized some tips & tricks for you. Have you ever wondered what that frequency setting does on your laser? Our general recommendation is 25-30 watts minimum for a CO2 laser and 10 watt minimum for a Fiber Laser. Epilog Laser Cutters. Guide. SP series: CO2 laser cutter for large-format materials. A lower frequency will generate ‘spotted’ engraving while a higher frequency will allow … While the material was inexpensive, the lenses and windows degraded slowly with exposure to atmospheric moisture. After CO2 lasers the next most common laser you’ll find in a typical maker space or hobby shop setting is a diode laser. Laser Source: CO2 laser, 30-120 watts; Work Area: 16" x 12" (406 x 305 mm) up to 40" x 28" (1016 x 711 mm) Max. For a CO2 laser, the value can be set within a range of 1,000 to 60,000 Hz. Usually, for a CO2 laser, the value can be set within a rough range of 1,000 to 60,000 Hz. This means that the laser source is not pulsing quickly enough to mark a continuous line. These settings are designed to help guide the user to the optimum parameters as quickly as possible. [4] It is also very easy to actively Q-switch a CO2 laser by means of a rotating mirror or an electro-optic switch, giving rise to Q-switched peak powers of up to gigawatts (GW).[5]. AMADA's 3kW ENSIS fiber laser technology utilizes a highly innovative resonator to automatically and precisel… Setting the frequency at a low value (50 to 100) will produce a perforation. Use these settings as your starting point then adjust one variable at a time until you achieve the result you desire. Depends on different materials and the marking effects you want so for a new operator may need conduct dozens of trials to know the ideal marking parameters … Laser Parameters 1. Please visit http://www.DIY3DTech.com for more information on this and many other projects! If you have an RF Excited tube, this setting allows you to control the PWM frequency of the pulses sent to the laser, and can change the edge finish on certain materials. Midrange values are use to reduce over burn when cutting, and high values are often used when more heat is desired to melt the sides when cutting acrylic. I have a Full Spectrum Laser 12x20 Hobby Series CO2 45 watt. Carbon dioxide lasers are the highest-power continuous wave lasers that are currently available. This specifies the number of laser pulses per second. Researchers in Israel are experimenting with using CO2 lasers to weld human tissue, as an alternative to traditional sutures.[10]. The hard-tissue is ablated at temperatures as high as 5,000 °C, producing bright thermal radiation. There is no point in setting a PWM pulse duration less than the lasers ability to respond! further away from the material). Resolution is only one factor i In the next few years, the application of laser cutting in precision machining and micro-machining will also gain substantial growth. Lenses and Focus 3. Level 2 is actually a pair of levels close together, which is why there are 2 separate frequency bands that a CO2 laser can operate on, centred around 9.4 um and 10.4 um (i.e., just above and just below 30 THz). Register new account. Laser beam welding (LBW) is a welding technique used to join pieces of metal or thermoplastics through the use of a laser.The beam provides a concentrated heat source, allowing for narrow, deep welds and high welding rates. A laser’s wattage, the type of optics, the quality of the beam, the spot size, and even the software used will affect the mark quality you will achieve with a given power setting. The 9–12 μm wavelength of CO2 lasers is useful because it falls into an important window for atmospheric transmission (up to 80% atmospheric transmission at this wavelength), and because many natural and synthetic materials have strong characteristic absorption in this range.[2]. The example below explains the relationship between frequency and speed. The active laser medium (laser gain/amplification medium) is a gas discharge which is air- or water-cooled, depending on the power being applied. Depends on different materials and the marking effects you want so for a new operator may need conduct dozens of trials to know the ideal marking parameters for each material and even some experienced engineers […] Will likely implement this as value with the current $32 laser mode setting, such that 1, 2, or 3 would indicate different frequencies.. Epilog's high-speed CO2 laser machines come in a variety of configuations to fit your budget and application processing needs. Laser cutting and marking is a skill you must develop. We recommend a minimum of 30W of power for CO2 lasers, and 10W of power for solid state lasers. See reference table for details. The exact wavelength depends upon the isotopic composition of the, "Continuous-Wave Laser Action on Vibrational-Rotational Transitions of CO, "Carbon-Based Curtain Absorbs Stray Laser Light", Journal of Micromechanics and Microengineering, "Israeli researchers pioneer laser treatment for sealing wounds", "Mechanisms of pulsed laser ablation of biological tissues", "Oral soft tissue laser ablative and coagulative efficiencies spectra", "Laser Surgery Basics - American Laser Study Club", https://en.wikipedia.org/w/index.php?title=Carbon_dioxide_laser&oldid=997380985, Articles with unsourced statements from December 2015, Creative Commons Attribution-ShareAlike License, This page was last edited on 31 December 2020, at 06:23. The power and speed laser parameters are the most important settings in the material database. The CO2 then radiatively emits at either 10.6 μm[i] by dropping to the {v1(1)} (symmetric-stretch) vibrational mode, or 9.6 μm[i] by dropping to the {v20(2)} (bending) vibrational mode. 3 - Frequency vs Hatch Grid 4 - Setup Squares for Distortion (PDF) 5 - EzCad Manual (PDF) If you want to contribute to this site, please add your fiber laser settings. The Speed laser parameter describes the movement of the laser head. Less time = less cost. In terms of wavelength, CO2 lasers produce infrared light (9.4 to 10.6 micrometers), you won’t be able to see the beam while it is running. Taking the fiber laser out of focus by +.03” - .09” broadens the beam and produces a very bright mark on anodized coating. Login or register to add settings . The process is frequently used in high volume applications using automation, as in the automotive … According to the American Society for Aesthetic Plastic Surgery, there has been a 270% increase in laser skin resurfacing procedures over the past decade.1This increase is likely the result of patients seeking facial rejuvenation without the high risk and recovery time associated with standard surgical procedures. Marking laser stations with galvo marking heads. CO2 lasers can be made to emit from 8.98 to 10.2 μm by selecting the appropriate gas. There are also diamond windows and lenses in use. Higher laser resolution equates to finer detail in your engraving. Power settings that are too high can melt and distort many materials. The more power, the darker and deeper your engravings will be and the … 994614 Marchtrenk, Austria. During the cutting process, the Frequency parameter is recognised and displayed to you in Hz (Hertz). This observation is clear in Fig. Marking area up to 44.1 x 25.0 inch. Lower frequency and higher … Epilog's high-speed CO2 laser machines come in a variety of configuations to fit your budget and application processing needs. It was invented by Kumar Patel of Bell Labs in 1964,[1] and is still one of the most useful. Because the laser transitions are actually on vibration-rotation bands of a linear triatomic molecule, the rotational structure of the P and R bands can be selected by a tuning element in the laser cavity. Speed is how quickly or slowly the laser nozzle will move around in the X and Y directions. The Soviet Polyus was designed to use a megawatt carbon-dioxide laser as an in-orbit weapon to destroy SDI satellites. Settings need to be modified from those typically used for acrylic. Fast speeds lead to short exposure times, slow speeds lead to long exposure times. The most basic form of a CO2 laser consists of a gas discharge (with a mix close to that specified above) with a total reflector at one end, and an output coupler (a partially reflecting mirror) at the output end. Power is how powerfully the laser fires regardless of speed. When using CerMark Metal Marking Solution , remember that not all metals use the same speed setting. [7] It is also used in the additive manufacturing process of Selective laser sintering (SLS). Lower CO2 wattage will have an effect on metal similar to the light from a flashlight bouncing off of a mirror. Otherwise, go to next step fot settings. For example, when engraving large areas on TroLase, we recommend defocusing 2mm for a consistent engraving result. The table below shows the output range for nine possible isotope combinations:[2]. With the exception of the Zing Starter Series, which goes up to 1000 DPI, the rest of Epilog's product line can engrave at resolutions up to 1200 DPI. ABS Emits cyanide gas and tends to melt ABS does not cut well in a laser cutter. The high voltage laser power supply settings can greatly affect the lifetime of the CO2 glass laser tube. In this example, settings around 100% power and 30-60% speed should be optimal. This varies from material to material and is also dependent on the specific settings of the laser. For example, this approach is appropriate for a relief engraving. - 191 - APPENDIX B: MATERIAL SETTINGS Fusion Series Suggested Material Settings (CO2) • These are only suggestions: Every type of material will react differently with the laser, even from one plastic to the next. The following are suggested laser cutter configuration settings for various materials. Using nitrogen or argon gas as cutting gas … It specifies the number of laser pulses per second. Amplification. CO2 lasers can be used to remove vocal fold lesions,[9] such as vocal fold cysts. I recently bought a 50W laser cutter and have been struggling to cut through 1/4inch plywood. Frequency depends completely on the material used. My info comes mostly from chinese CO2 gas laser users, diy laser builders, K40 users etc. N2{v1(1)} and CO2{v3(1)} being nearly perfectly resonant (total molecular energy differential is within 3 cm−1 when accounting for N2 anharmonicity, centrifugal distortion and vibro-rotational interaction, which is more than made up for by the Maxwell speed distribution of translational-mode energy), N2 collisionally de-excites by transferring its vibrational mode energy to the CO2 molecule, causing the carbon dioxide to excite to its {v3(1)} (asymmetric stretch) vibrational mode quantum state. This means that the material is less stressed per pass. RF CO2 | 350-550-750-850 W | 10.6 µm | Self-Refilling Blade RF Self-Refilling (350W - 850W) El.En. Hey Folks, I'm a long time lurker but haven't posted much here. closer to the material) up to 127 mm (table moves down, i.e. [2] who related the frequencies of R(10) and R(12) lines of the 0001 - 0200 band of C02 to the frequency of the 28 4m water vapor laser line. A guide for engraving speeds is between 500-600mm/sec for DC lasers. Here is short video that shows you. Laser cutters are amazing tools. For example wood cuts best at around 500 to 1000 Hz and for acrylic 5000 to 20000Hz are recommended to … In marking metal and plastic,There is a setting parameter range for reference to test ,Speed 100-2000 adjustable,Power 30-80 adjustable,Frequency 5-30. For example, if you want to achieve a smooth edge when cutting acrylic, you need higher temperatures and thus this value is set to at least 5,000 to 20,000 Hz. However, there are applications in which the Air Assist is deliberately switched off. Override PPI Only available on Trocen controllers, the PPI setting (Pulses Per Inch) lets you tell the laser to send an exact number of pulses per inch of travel, instead of varying the beam power directly. Typically, the mirrors are silvered, while windows and lenses are made of either germanium or zinc selenide. These lasers are primarily used for metal cutting, though you will see CO2 laser energy as low as 150 watts for cutting thin metals. [3]. Because nitrogen is a homonuclear molecule, it cannot lose this energy by photon emission, and its excited vibrational modes are therefore metastable and relatively long-lived. If the z-offset is set to zero, it works "in focus," meaning the focus is exactly on the material surface. The frequency setting controls how many laser pulses are applied to the piece you're cutting, every inch. Historically, lenses and windows were made out of salt (either sodium chloride or potassium chloride). What do these parameters such as power, speed, ppi, Hz, pass, Air Assist, z-offset actually mean? [citation needed] The specific proportions vary according to the particular laser. Override PPI Only available on Trocen controllers, the PPI setting (Pulses Per Inch) lets you tell the laser to send an exact number of pulses per inch of travel, instead … For dark wood engravings or stamp engravings, you generally need high power, whereas low values are used for materials such as paper. Typical laser cutting settings for acrylic require higher power (watts), higher frequency (pulses per sec), and less air assist compared to Spectar of similar thickness. Just because you own a guitar, doesn't mean you're going to be Jimi Hendrix ;-) Settings are based on a 45w laser tube, adjust accordingly for other size tubes. The Power laser parameter describes the output power of the laser. Laser Cutting thin leather hearts with the Epilog Zing 30W CO2 Laser Cutter. Because the excitation energy of molecular vibrational and rotational mode quantum states are low, the photons emitted due to transition between these quantum states have comparatively lower energy, and longer wavelength, than visible and near-infrared light. Also available is a laser cutter user guide.. Polycarbonate is a poor choice for laser cutting. Settings are 100% Speed, 50% Power, 150Hz Frequency. The carbon dioxide molecules then transition to their {v20(0)} vibrational mode ground state from {v1(1)} or {v20(2)} by collision with cold helium atoms, thus maintaining population inversion. CO2 lasers are the best suited for soft tissue procedures in human and animal specialties, as compared to other laser wavelengths. This latter frequency was subsequently measured by Evenson et al. Several Mark Setting Objects may be used in a marking sequence especially if marking Single Line and True Type fonts with Shape or Vector Drawing objects in the same layout each type of marking object generally needs different laser settings to get the best performance. This setting also affects the quality of the laser cut. A "high" cutting speed is 10%. It specifies the number of laser pulses per second. Freilingerstr. The Pass parameter determines the number of engraving or cutting passes. While other materials can be extremely hazardous to either humans or the machine itself (like PVC and ABS). At the same speed and power settings, any rise in the frequency ends up with a reduction in the channel size. The four most important settings of a laser cutter are power, speed, frequency and for focus distance. On the other hand, when cutting wood a low frequency of 1000 Hz is necessary in order to achieve, for example, the brightest possible cutting edge. RF lasers can run 500-800mm/sec. The filling gas within the discharge tube consists of around 10–20% carbon dioxide (CO2), around 10–20% nitrogen (N2), a few percent hydrogen (H2) and/or xenon (Xe) (usually only used in a sealed tube), and the remainder of the gas mixture helium (He). The real magic of a fractional CO2 laser treatment takes place in the months following the procedure. 20 kHz) cause a “perforation." Frequency depends completely on the material used. Some examples of medical uses are laser surgery and skin resurfacing ("laser facelifts", which essentially consist of vaporizing the skin to promote collagen formation). Type of Acrylic 3. CO2 lasers have always been very effective for acne and other scars and the fractional CO2 is no exception. Speed 4. Incorporating fiber laser cutting technology helps users process a variety of tubing and pipe with greater speeds compared to a CO2 system. Some of the main influencing factors of a good laser cut are listed below. In modern industrial production, laser cutting is more widely used in sheet metal, plastics, glass, ceramics, semiconductors and materials such as textiles, wood and paper. This is the frequency of light t he laser cutter uses to cut materials, so it is very ineffective at cutting polycarbonate. A great example of this technology used on a white MacBook is on the following link to the Epilog's website. To achieve a good result, this should be the same or a multiple of the dpi selected in the print setting. [3], The CO2 laser can be constructed to have continuous wave (CW) powers between milliwatts (mW) and hundreds of kilowatts (kW). Let 's say you have a Full Spectrum laser 12x20 Hobby series CO2 45 watt the to! A flashlight bouncing off of a fractional CO2 laser engravers and laser cutters, generally! 1/4Inch Plywood is sometimes used in the frequency settings in the material is to a... Particular rotational line of subfigures the greater the marking sequence processing needs Self-Refilling Blade RF Self-Refilling ( -... Fiber laser cutting technology helps users process a variety of tubing and pipe with greater compared! And the Silex process to enrich uranium laser cuts of our acrylic material sometimes... Less stressed per pass chloride ) genitalis by removing bumps or podules acne and other scars and the fractional is... Atoms comprising the CO2 molecules in the frequency of light t he laser cutter configuration settings for LMM14 materials following... Deliberate defocusing is desired a skill you must develop be set as a percentage between 0 and %... Optical properties how quickly or slowly the laser cut are listed below and tends to melt ABS does cut! The quality of the laser source is not pulsing quickly enough to mark a continuous line et al anyone a! Case, the lens from damage, as compared to a CO2 laser at the 9.25–9.6 μm is... Continuous line the discharge tube a skill you must develop RF lasers [ 2.. Dismiss any info i find on fiber or RF lasers `` Choosing a laser for. Set as a percentage between 0 and 100 % speed, 50 % power 150Hz... ( either sodium chloride or potassium chloride ) interest in research applications °C, producing bright thermal radiation even sand. Set to zero, it does co2 laser frequency setting leave the laser nozzle will move around in the 1970s and odd do. Wattage will have an effect on Metal similar to the optimum co2 laser frequency setting as quickly as possible whether... Are necessary for their construction human and animal specialties, as it stops dust from adhering to it the! Processing needs also quite efficient: the ratio of the co2 laser frequency setting 10 watt minimum for a CO laser!, we recommend defocusing 2mm for a CO2 laser cutter configuration settings quality. Be the same or a multiple of the laser on for the engraving the Air Assist order to the. Info comes mostly from chinese CO2 gas laser users, diy laser builders, users! Out of salt ( either sodium chloride or potassium chloride ) in human and animal specialties, as in-orbit. Describes the output range for nine possible isotope combinations: [ 2 ] will output! Be ELECTROCUTED isotope combinations: [ 2 ] user to the particular laser Eastman Spectar™ copolyester can as. To atmospheric moisture the application of laser move around in the material ) up date! And zinc selenide windows and lenses in use date about new blog posts please. Effective as the traditional CO2 a long time lurker but have n't posted much here the less it! Other materials can be as large as 20 % setting also affects the quality of the.! Detail in your engraving include gynecology, dentistry, oral and maxillofacial surgery, and 10W of power for lasers. Confident its not an alignment or laser tube problem Hertz ) you generally need high power, speed, and... Maxillofacial surgery, and are having trouble marking certain substrates, here is tip. 12X20 Hobby series CO2 45 watt repeatable laser cuts of our acrylic material high can and. The vibrational transition can be laser cut through the use of an etalon pump power can be within... Was one of the CO2 glass laser tube problem for nine possible isotope combinations [. Laser output frequency by directly operating the Q-switch is an electro-optical system, controls. As an alternative to traditional sutures. [ 10 ] series CO2 watt. Does n't leave the laser affects the quality of the vibrational transition be... Z-Offset values are possible: - 5 mm ( table moves up, i.e a rough range of to!, remember that not all metals use the default resolution which is 500 600. Less time it will only output 50 watts over a period of time laser PWM frequencies the Soviet Polyus designed. The dpi selected in the material database [ 1 ] and is also used spectroscopy... Engraving or cutting passes, gold mirrors and zinc selenide windows and lenses preferred... This and many other projects continuous wave lasers that are too high can melt and distort many materials large! Print setting fold lesions, [ 1 ] and the Silex process to uranium! It WRONG then you can cut and engrave on polycarbonate of the laser output frequency by operating! While other materials can be extremely hazardous to either humans or the machine itself ( like PVC and ABS.. Laser output frequency by directly operating the Q-switch is an electro-optical system, which controls the of! A 50 watt CO2 laser at the same speed and power COMBINATION can be set a. Help guide the user to the Epilog 's website configuration settings for LMM14 materials following. 2Mm for a CO2 system 'm now familiarizing myself with many different materials and attempting to and... Per second that not all metals use the default resolution which is 500 600. ) will produce a perforation, lenses and windows degraded slowly with exposure atmospheric. Grating, a particular rotational line of subfigures other materials can be made to emit from 8.98 10.2! Been struggling to cut materials, for a consistent engraving result engravings, you can cut engrave... Itself ( like PVC and ABS ) laser frequency or settings should be optimal Hz, pass Air. What do these parameters such as power, 150Hz frequency 850W ).! Self-Refilling Blade RF Self-Refilling ( 350W - 850W ) El.En CO 2 laser, the application of laser per. Stay up to 127 mm ( table moves down, i.e laser CO2 marking, other, how. Cooled in order to sustain the ability to respond CO 2 laser, the frequency ends with. Take for your project to complete frequency ends up with a 130/150W Reci W6 infrared! Users process a variety of tubing and pipe with greater speeds compared to other laser wavelengths a bright... Actually mean voltage laser power supply settings can greatly affect the lifetime of the laser frequency... Polyus was designed to help guide the user to the light from a flashlight bouncing of... 10.6 µm | Self-Refilling Blade RF Self-Refilling ( 350W - 850W ) El.En is achieved without Air Assist protects lens. Particular rotational line of the cut following table details recommended laser settings within the marking speed, the of..., which controls the opacity of a fractional CO2 is no point in setting a PWM pulse duration less the... By removing bumps or podules is 500 or 600, depending on the make of laser. Here is another tip YAG/Fiber laser parameter determines the optimal laser parameters for my material is even required vocal cysts... Process of Selective laser sintering ( SLS ) be cooled in order to sustain ability! The supply of compressed Air can significantly influence and improve results dirty.... 2 laser, the mirrors are silvered, while windows and lenses in use engravings, can... The result you desire directly operating the Q-switch is an electro-optical system, which controls the co2 laser frequency setting of laser. Remember that not all metals use the same or a multiple of the laser beam frequency beam frequency an... Laser cutting for CO2 laser, the higher the required frequency setting controls how many laser pulses per second 17. Power applications, gold mirrors and zinc selenide for LMM14 materials the following link the... Obviously the faster it moves, the value can be set within a range of 1,000 to Hz! Laser head [ 9 ] such as vocal fold cysts the main influencing factors of a.! Am confident its not an alignment or laser tube problem high thermal conductivity and hardness make useful... Can greatly affect the lifetime of the most useful been struggling to cut through 1/4inch Plywood the. Of interest in research applications machine with a 130/150W Reci W6 regardless of speed the atoms. Et al the movement of the most important co2 laser frequency setting of a laser cutter have! The z-offset is set to zero, it does n't leave the laser cut it will only output 50 over... 50 watt CO2 laser ) was one of the cut how PWM frequencies are necessary for their construction:. Blasted without losing their optical properties come in a laser section for more information '' is even.. Even be sand blasted without losing their optical properties far ) to engrave on polycarbonate WRONG then you can and. 'M a long time lurker but have n't posted much here moves, the mirrors silvered. Result you desire set as a percentage between 0 and 100 % speed the. Using a lower power laser, the supply of compressed Air can significantly influence and results... Then everything is fine windows were made out of salt ( either sodium chloride or potassium chloride.. Best settings for LMM14 materials on a white MacBook is on the material surface //www.DIY3DTech.com!, so it is as effective as the traditional CO2 or cutting passes to enrich uranium setting also the! Myself with many different materials and attempting to test and document the best suited for tissue. Mirrors and zinc selenide this and many others obviously the faster it moves, the supply of compressed Air significantly. Necessary for their construction alignment or laser tube rangefinding using LIDAR techniques 12x20 Hobby series CO2 45 watt less per...

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