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  • JohnYayas's Avatar
    Today, 03:12
    That is really cool. Probably not all that useful for shows since it is relatively slow but would be really cool as an exhibit or backdrop at some tradeshow or concert.
    128 replies | 13887 view(s)
  • VDX's Avatar
    Today, 01:59
    ... lasered some 70mm stainless steel discs for "outdoor use" with the 20W Galvo marker for a friend -- the inscription (especially the serial numbers) should withstand >20 years of wind and weather ;) Here a video showing the marking of a (slightly different) previous part:...
    165 replies | 25604 view(s)
  • fuzzy's Avatar
    Yesterday, 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 | 286 view(s)
  • aberry's Avatar
    Yesterday, 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 | 286 view(s)
  • buffo's Avatar
    Yesterday, 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 | 102 view(s)
  • swamidog's Avatar
    Yesterday, 06:53
    I did a little uv work with the Radiator last night. Eventually I stopped drooling and turned the camera on.
    128 replies | 13887 view(s)
  • Datsurb's Avatar
    Yesterday, 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 | 102 view(s)
  • kecked's Avatar
    Yesterday, 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 | 917 view(s)
  • Junktronix's Avatar
    05-25-2020, 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
    05-25-2020, 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
    05-25-2020, 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 | 86 view(s)
  • carlos3621's Avatar
    05-25-2020, 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 | 64 view(s)
  • AP2020's Avatar
    05-25-2020, 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
    05-25-2020, 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 | 286 view(s)
  • fuzzy's Avatar
    05-25-2020, 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 | 286 view(s)
  • aberry's Avatar
    05-25-2020, 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 | 286 view(s)
  • fuzzy's Avatar
    05-25-2020, 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 | 286 view(s)
  • aberry's Avatar
    05-25-2020, 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 | 102 view(s)
  • HankLloydRight's Avatar
    05-25-2020, 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 | 917 view(s)
  • buffo's Avatar
    05-25-2020, 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 | 917 view(s)
  • buffo's Avatar
    05-25-2020, 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 | 102 view(s)
  • Datsurb's Avatar
    05-25-2020, 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 | 102 view(s)
  • VDX's Avatar
    05-25-2020, 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 | 286 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 | 286 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 | 286 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 | 286 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 | 286 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 | 286 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 | 1652 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 | 286 view(s)
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