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  • fuzzy's Avatar
    Today, 11:13
    It's a problem, but a second-order one. As everyone agrees in this thread, it's not given that it would even work. And if it does work, then some mitigations about dust / goo buildup may need to be developed. One option is to place a transparent to the laser and optics sheet of plastics or glass...
    24 replies | 275 view(s)
  • aberry's Avatar
    Today, 09:58
    Sure, there will be debris from mechanical cutting as well, but one of the things I was trying to point is that with combustion/ablation, it's a much more problematic form of debris. Instead of cardboard dust and maybe bits of tape we're talking about very fine particulate, smoke and soot...
    24 replies | 275 view(s)
  • buffo's Avatar
    Today, 08:34
    You got it! Your picture is exactly how you want to wire up the DC side. I would avoid calling the middle connection "neutral" though... Neutral is normally associated with 120 Volt AC circuits, so to avoid confusion you don't normally see that term used when discussing DC circuits. ...
    4 replies | 99 view(s)
  • swamidog's Avatar
    Today, 06:53
    I did a little uv work with the Radiator last night. Eventually I stopped drooling and turned the camera on.
    127 replies | 13883 view(s)
  • Datsurb's Avatar
    Today, 04:35
    Thanks for the advice. I did not think of wireing in series. But it makes perfect sense when you point it out. We are actually in need of 48V as that is the difference beween -24V to +24V. Just to make sure i made a simple drawing on how i understand your suggestions. Both PSU wired to 230V...
    4 replies | 99 view(s)
  • kecked's Avatar
    Today, 03:35
    No drones on campus. Checked for you. We are in the flight line of a helipad for a hospital. Cost is way high too.
    43 replies | 907 view(s)
  • Junktronix's Avatar
    Yesterday, 18:44
    And just to be clear, <cr> means 'carriage return', in other words, press the enter key.
    17 replies | 387 view(s)
  • Junktronix's Avatar
    Yesterday, 18:42
    The baud rate is definitely 9600. I always connect to the Navigator firmware with no handshake. Try turning off XON/XOFF and if you still don't get a response, try swapping pins 2 and 3. I have always had good luck with PuTTY. It's free. Another super basic test is to loop pins 2 to 3 and make...
    17 replies | 387 view(s)
  • carlos3621's Avatar
    Yesterday, 17:12
    carlos3621 started a thread SELLING : FB4 with Beyond Ultimate in Buy/Sell/Trade
    For sale: external FB4 dac with Beyond Ultimate software $3100 usd plus shipping. PM if interested. thanks!.
    0 replies | 80 view(s)
  • carlos3621's Avatar
    Yesterday, 16:51
    carlos3621 started a thread SELLING : FB4 with Beyond Advanced in Buy/Sell/Trade
    I have an extra: External FB4 DAC with Beyond Advanced License for sale $1600 usd cash plus shipping. PM if interested. thank you.
    0 replies | 58 view(s)
  • AP2020's Avatar
    Yesterday, 16:09
    Hello, I am trying to establish serial communication with no success. Serial port is 8-N-1 Xon/Xoff, varied baud rate from 1200 to 9600, checked serial cable, it is straight through (2-2, 3-3, 5-5). Tried commands ?V and ?WARMUP% with CR at the end. Tried two different terminal programs Termite and...
    17 replies | 387 view(s)
  • VDX's Avatar
    Yesterday, 13:55
    ... as lasers will add a bunch of other (partially unresolvable) problems, my best bet will go back to ceramic blades in a rotating head and/or upped with ultrasonic energy :cool: Viktor
    24 replies | 275 view(s)
  • fuzzy's Avatar
    Yesterday, 13:31
    You're on point. Dust is a real problem. But it's a problem even without lasers involved and a regular maintenance is a necessity. The hope here is that correcting a laser is easier than a metal blade. Sometimes, packages are reinforced with metal braces like this: A metal blade...
    24 replies | 275 view(s)
  • aberry's Avatar
    Yesterday, 12:41
    One other consideration here is that you will need to deal with combustion/ablation products from laser cutting. The material that is removed during laser cutting doesn't just "go away", it's converted into other substances including smoke and soot and other particulates and volatiles that like to...
    24 replies | 275 view(s)
  • fuzzy's Avatar
    Yesterday, 12:29
    Makes sense, thanks. I will try to go with a camera module that allows for fixed exposure and then integrate across the frame.
    24 replies | 275 view(s)
  • aberry's Avatar
    Yesterday, 12:28
    Wiring them as you describe will likely fry the drivers, at the very least the negative voltage regulator will be toast. Wire them in series as buffo describes.
    4 replies | 99 view(s)
  • HankLloydRight's Avatar
    Yesterday, 08:17
    This is weird. I put "Grainger Performing Arts Center" into Google Maps, and it took me to "Kinston Lenoir Performing Arts Center" (2601 N Queen St, Kinston, NC), which is another PAC in Kinston, but it's right next to a high school (Kinston High School) with all the amenities we're looking for. ...
    43 replies | 907 view(s)
  • buffo's Avatar
    Yesterday, 07:26
    I suppose it depends on how much sound insulation there is between the auditorium and the apartment building. But I agree it's a question we have to address. Adam
    43 replies | 907 view(s)
  • buffo's Avatar
    Yesterday, 07:24
    Not quite. If you do this, both positive terminals will be +24 volts. What you need is a +24 volt supply and a -24 volt supply. Instead, you want to connect the positive terminal of one PSU to the negative terminal of the other PSU. This common connection point will be your new DC ground. ...
    4 replies | 99 view(s)
  • Datsurb's Avatar
    Yesterday, 05:44
    I just got a set of new DT50B. It arriwed with 2 pcs of 24V DC PSU`s insted of 1 pcs that i have for all other scannersets. The PSU`s don`t have the normal +/common/- wireing but just plain positive and negative terminals. So in my mind, I can wire this up hooking up both PSU`s with the nevative...
    4 replies | 99 view(s)
  • VDX's Avatar
    Yesterday, 02:05
    ... some sort of sensor/detector (e.g. camera, photo-transistor or some "sensitive" material for "burning tests"), measure signal with direct illumination an then put your test-sheet between -- and look, if the signal lowers significantly :cool: Viktor
    24 replies | 275 view(s)
  • fuzzy's Avatar
    05-24-2020, 17:32
    To the main topic: I just bought some cheap 352nm torchlight and will be testing if scotch tape is transparent at this wavelength. If it's fully transparent at 352nm, my only remaining option would be galvo CO2. If it's absorbing a reasonable amount, I will consider buying a galvo 352nm...
    24 replies | 275 view(s)
  • fuzzy's Avatar
    05-24-2020, 17:28
    Looks terrific! galvo + CNC is a great combo. Recently, an even better one has become somewhat affordable: laser + 6 degrees-of-freedom robot arm. That allows to go beyond x/y/z and beyond flat objects, but more heavy on software. galvo + XArm6 is the route I am currently seriously...
    24 replies | 275 view(s)
  • VDX's Avatar
    05-24-2020, 16:31
    ... this was a 200W@975nm laserdiode, with some microsecond long pulses (IIRC 3Ás), at below 100 Watts of power, on a spot of maybe 0.2mm. Here its burning through a tile - https://www.youtube.com/watch?v=nVsZ07bP-AM Have some of them to combine up to 1.2kW on a 0.4mm-spot :cool: --- ...
    24 replies | 275 view(s)
  • fuzzy's Avatar
    05-24-2020, 15:26
    Got it, thanks! These 445nm diode modules are amazing. Yeah. In my case, there are three primary materials: - corrugated carton; light brown. I kind of able to get through it with my fiber laser, but it mostly burns than ablates. - thermal shipping labels. Bright white. It's extremely hard...
    24 replies | 275 view(s)
  • VDX's Avatar
    05-24-2020, 13:53
    ... the 2W to 6W laserdiodes were blue 445nm-diodes, focussed on spot diameters around 0,1mm. The fiberlasers were at 1064nm and cuts coloured/dark paper or adhesives without problems, but could be problematic with white or transparent materials. For samples/images -- read through this thread...
    24 replies | 275 view(s)
  • absolom7691's Avatar
    05-24-2020, 12:54
    absolom7691 replied to a thread Static Lumia pics in Lumia
    Here are a few projections from my lumia. In person, the colors are super vivid and bright. Best I could do with my cell phone... A video of the dimple tube. It looks soft because I could not get my phone to focus. I may have to get out the dSLR for better results Here it is, it...
    22 replies | 1648 view(s)
  • fuzzy's Avatar
    05-24-2020, 12:46
    The fiber laser itself is fine; I have no problems engraving steel / aluminum / brass. As for parameters, it's certainly possible that I just failed to find the right combination of frequency / power / speed. If anyone has a hint, I will very much appreciate it.
    24 replies | 275 view(s)
  • absolom7691's Avatar
    05-24-2020, 12:44
    absolom7691 replied to a thread Static Lumia pics in Lumia
    I like it! The term definitely fits! My next post I'll have a short video of my dimple glass. Ions are still king when it comes to uniform divergence, beam quality, and of course, there is no mucking about trying to get your beams lined up to get a good white. Also, the range of wavelengths...
    22 replies | 1648 view(s)
  • mixedgas's Avatar
    05-24-2020, 12:37
    IF THAT IS aLL your fiberlaser did at 20 watts, it sounds like it was not programmed correctly, set up properly, damaged, or driven with the wrong signal. Was there an F1 lens in front of the fiber to focus the light? STEVE
    24 replies | 275 view(s)
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