You must check for continuity -- when it works wirewrap is a very solid connection but around 10 percent of the connections will fail and have to be redone. The total delivery of power integrated over time is 100 watts. I may come up with something else such as runing lines to terminals, but for now, I think simple is best. In the new system the point of contact to the part is relatively small, when the laser passes over where the supporting table there's no splashing. To make the experience fit your profile, pick a username and tell us what interests you. What would you have done differently? There is a lot of magic (and science!) The cutting head was manufactured by Haas LTI.The principal of the cutting head is that the beam enters the top of the head and is directed to a focusing lens that is found in the center of the cutting head cavity. And OXYGEN, around oil, can be very dangerous! Make sure the position of the gas input is in a position for easy access, I chose to place them straight up. Well, how big a diameter can I expect with my optics? The output coupler. Your D-I-Y surgical endeavours can be prevented by adding two safety buttons, either side of the work space, with protective rings, to prevent cheating the switches, so at least you know where the fingers are! You need a fume exhaust in order to evacuate particulates, vapour and gases released during operation. And now the most entertaining process, in quotes, turn off the block with the wire going to the low-voltage part of the high-voltage power supply, apply voltage to it and to the water pump for cooling, hook a piece of masking tape to the place where the first mirror should be installed, and push the test button on the laser power supply board, now moving … Put a mark along the edge of them so you can line them up again after… trust me on this. 8 years ago What you can see from this experiment is that the beam size gets smaller down to a distance of 650ths of an inch and then starts to increase in size.I would not claim that is a good method to determine the beam diameter. I did this way back in 1980. Now, this was hard for me. The sweet spot of the beam waist can be placed in path of the beam by adjusting the height of the cutting nozzle.To find the best height for minimum beam diameter, I used the thermally sensitive paper and looked at the beam diameter as a function of height. Its the molecular equivalent of shooting at a target with a shotgun that's a mile away.I have succeeded in cutting a disk of approximately 1/4 diameter off the tip of my finger though. The heat shrinkable wrapping around the windings completely prevented the epoxy from entering any windings. What is the kerf (width of cut) with your laser here? The key, as you may very well know, is to think about your optics. I did verify that the joing was 100% sealed with the use of flux and then testing under water as before. Small CO2 lasers are used for marking of metal, wood, and composites, and in medicine and surgery. The next step was to drill holes for the mounts. The rack has to be level, because the distance from the laser that can develop the power density to cut metal can only vary by a less than a millimeter. then after, you make a loop of wire and using nuts simply tighten it down over the optics. It has a total of 18 inch movement in X and Y directions. I believe that he hit the cartilage with the laser… 2: the Power of Layers. Note: Do NOT over tighten! I did consider CPVC for its thermal characteristics but decided that a standard 2″ PVC would suffice. If you are worried about slippage or damaging the optics, put some heat shrink onto the wire. After that, wet the score and with your thumbs positioned on the sides of your score, snap it like you were breaking a twig. The laser has a cnc table that moves parts around a stationary beam source.A table of this size required building fairly large power supply to drive the table's servos. You are correct. The surgeon turned up the laser too high and burned a rectangular laser hole into my nose. And now for assembling the laser tube itself. Knowledgable designers should consider adding circuitry that will safely discharge across a power resistor; although I have not been able to get advice on exactly what that circuitry would look like.The suply employs a full wave bridge circuit and put into a canibalized Sun harddrive enclosure. This loosens the wire enough to then be pulled off with your fingers. The important thing is to make sure that you seal it. The laser itself was $6500, I bought a cnc table for $500, and the optics were another $2500. Being able to rapidly unwrap wirewrap is essential. You can make … Speedy series: laser engraving and cutting machines for formats up to 40 x 24 inches . on Introduction. 3 days ago, How do I put my TTL driver board and diodes together for a battery operated laser burner pointer? I dont know if there is a way to determine what the beam size is, however, it was still interesting to look at the spot under the 100x microscope. The carbon dioxide (CO2) laser is the powerhouse for high tech industrial cutting and welding of metals and many other materials. I'm assuming the neon power supply is part of it, but does it also depend on the length of the CO2 chamber? Once thing I know, is that I can control my power output with electronics going to the laser. I believe the link to "this is a comprehensive diagram" is broken. Privacy Policy After some tinkering to check all the seals, this was the result and what I wanted to see ^^. For the base of the laser I used oak. Therefore, I have two questions where I really struggle. Encase the laser. There arent any systems that I know of that are in my price range. I would like a CNC of those at home. I had aquired the 12mm glass tubing from the neon guy in town. The grey clamps holding it are from the electrical department, for electrical conduit. Congratulations, it's a great work and perseverance sample. The glass tubing is in it and I tossed on two gromets, one on each end to keep it in place and safe from being broken while I constructed the rest of it. Carbon dioxide gas -- CO2 -- can be used for enriching the growing conditions for plants. Look forward to updates. Lots of ideas came to my mind, many of them were WAY to complex for this project. Hurts like heck but it cuts while it cauterizes, so there's no bleeding. For the Electrical, I am going to simply use aligator clips (well insulated of course) and clamp onto the mirror mounts or the T fitting. Consider a CO2 Laser for Your Metal-Cutting Projects. I would have liked to have all inputs and outputs of electronic/electric connections going into a board handling TTL signals, relays, and connections for external limit switches, and then put the logic of the overall system together with microcontroller software. It is essential to wear goggles any time the laser is on as even reflected laser light can gave a deleterious effect on eyes and body! There are some optics that are specifically designed for the laser itself which would allow you to just take the optics out of the box, connect to the system, and you are ready to go. The problem will be my depth of field. The tips of the points on the blades are machined well enough they form a nice flat surface. Maximum Continuous Current 8.9AUS digital motor encodersencoders were used to detect the position of the motor relative to turns of the lead screw.The new motors were so large that they dont fit the nema 34 sized system on my table.At Stock Drive ProductsStock Drive Products, they have piles of cad drawings, pdf files specifying pulleys and belts, and a straight-forward ordering system. After I got the hang of this, I went back to the targetting system to adjust the beam as best I could to be on center.The cutting head has a nozzle on it with a port that is roughly half a millimeter in diameter. I simply suspended it while it dried overnight between coats. Some shots of the plasma. For this I used a dremel, a fine file, and find sand paper. When I got home, I cut off the last barb on the sharkbite fitting, the washer I selected had a slightly to small center hole, so using a rat tail file I filed this out carefully to create a VERY snug fit… it was so snug a rubber mallet had to be used to get it into the fitting. But you still need to wear protective eye-wear (glasses) for the times your enclosure has the door open and or you are doing maintenance.b) protect your lungs and respiratory tracts.Another important aspect is the fume exhaust system that depends on the materials that you know you can safely cut. 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