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  • HankLloydRight's Avatar
    Today, 04:53
    There's also NELEM in West Newbury MA. The last one was in 2018, so maybe it's time for another later this year (virus permitting)?. See: https://photonlexicon.com/forums/showthread.php/27190-NELEM-V-September-29-2018! Also, one of the co-hosts is PL member "planters" who runs this...
    2 replies | 63 view(s)
  • Lazerjock's Avatar
    Today, 03:50
    On the east coast I attend SELEM & FLEM (Florida).
    2 replies | 63 view(s)
  • lasermaster1977's Avatar
    Yesterday, 11:29
    I've heard about TEXLEM and SELEM, but are there others in the US? Thanks
    2 replies | 63 view(s)
  • VDX's Avatar
    04-02-2020, 13:35
    ... this was with a "pulsed" 20Watt fiber-laser and XY-galvoscanners ... here a video removing the paint from a PCB and then burning through the copper to engrave a QR-code :cool: https://www.youtube.com/watch?v=sxBJtnqhuYw Viktor *** EDIT *** - for the power -- the "20 Watts" is the...
    34 replies | 679 view(s)
  • rns0504's Avatar
    04-02-2020, 12:02
    rns0504 replied to a thread Positive Thinking in The Lounge
    And yes Adam I've switched to the dark side.... that truck does NOT have a bow tie on the front! I've been getting some work done on my old Chevy as well during the evenings... cut out all the IFS junk and fitted an axle from a 79 F250 in its place... That welding and fabrication class sure is...
    1 replies | 138 view(s)
  • rns0504's Avatar
    04-02-2020, 11:57
    rns0504 started a thread Positive Thinking in The Lounge
    Amid everything going on, would like to hear some positive things from our community. Getting frustrated at hearing all the negative. Anybody have any exciting projects going on, or new opportunities? Doing anything fun in any (new found) time off? I've taken the opportunity to head out to...
    1 replies | 138 view(s)
  • dar303's Avatar
    04-02-2020, 11:57
    hehe, found this while looking for drivers...20.000W laser drivers, 4x160Amps plus controller very cheap if you are int the US https://www.ebay.com/itm/NUVONYX-GLG-4X-4-LUMINA-POWER-LDD-5000-160-3-LASER-DIODE-DRIVER/383487329613?hash=item5949a0454d:g:BEMAAOSwhixdnKLD#viTabs_0
    34 replies | 679 view(s)
  • dar303's Avatar
    04-02-2020, 11:25
    Very cool! And expensive! :) I saw a picture on the German forum where you directly etched a copper PCB, what wavelenght/power/pulse rate did you use there? It looks like raster scanning, was it done with galvanometers or X/Y stage?
    34 replies | 679 view(s)
  • clickamouse's Avatar
    04-02-2020, 10:55
    Greetings, all; Here is some info about a "laser show" I will be doing April 3 online. One man's struggle to cope with the Covidian Crisis. Background Since 2013, Illuminatus Lasers has been a fixture of FoolMoon, an Ann Arbor light festival/art event. We started on the roof of the...
    0 replies | 173 view(s)
  • VDX's Avatar
    04-02-2020, 10:06
    ... search for "optical isolator" - https://en.wikipedia.org/wiki/Optical_isolator#Polarization_dependent_isolator Viktor
    34 replies | 679 view(s)
  • dar303's Avatar
    04-02-2020, 06:38
    Very cool technology, do you have a picture how it looks?
    34 replies | 679 view(s)
  • dchammonds's Avatar
    04-01-2020, 20:30
    Yes, there are restrictions in place, but people NEED to heed them!
    76 replies | 3558 view(s)
  • carlos3621's Avatar
    04-01-2020, 17:52
    Approximately 20,000 people die every year from the FLU, their are restrictions in place to limit this version of the FLU from spreading. have faith people!!
    76 replies | 3558 view(s)
  • VDX's Avatar
    04-01-2020, 14:23
    ... this should be control/loop sensors -- don't know any system fast enough to prevent overpowering with back reflection. The "Faraday-isolator" in the kollimator heads of the pulsed fiberlasers works "passive" - it's a nonlinear crystal in a strong magentic field, which is changing the...
    34 replies | 679 view(s)
  • dar303's Avatar
    04-01-2020, 13:22
    Have you hacked the back reflector detectors on some of the diodes to use the signals in your own builds? Oh, I want to ask a few questions about the feedback sensors inside the unit! There are a semi reflective glass plate and two sensors, there was a small glass cube loose inside the unit...
    34 replies | 679 view(s)
  • kecked's Avatar
    04-01-2020, 07:01
    I'd still like to see a streaming platform from the internet to ilda. Problem is it needs security or everyone can record it....Can't stop adat. I think an app that receives the data via the web and then sends out a play only stream to a dac could work. We still have he music rights issue to...
    44 replies | 4791 view(s)
  • HankLloydRight's Avatar
    04-01-2020, 05:15
    VR is great, but that still leaves one big question: How is Brad going to cook his amazing meals for us all!?!??! :eat::plate::pizza::bowl::starving::beer::knife::cake:
    44 replies | 4791 view(s)
  • Shadow's Avatar
    04-01-2020, 04:57
    Pretty much a videogame. Like VRchat. Running a server would be easy enough and anyone could join. Just need a custom map designed that will look similar to past LEMs. I'm not 100% sure but I believe you can play videos in it while everyone is there so a good way for people to play their shows via...
    44 replies | 4791 view(s)
  • VDX's Avatar
    04-01-2020, 04:55
    ... if for the exploded fiberlasers -- this are mostly CW-fiberlasers without Faraday-isolator in the kollimator head - here, with too much back-reflection, some or all of the fiber couplers may overheat within Nanoseconds! Had two occasions with two of my CW-fiberlasers, where they stopped for...
    34 replies | 679 view(s)
  • kecked's Avatar
    04-01-2020, 04:04
    8000 people die normally everyday on average in the USA. So essentially this will double the death rate for about 2 weeks. 8000*12.5=1000000. There are 330M people in USA. Thatís 0.03% of the population. If the death rate for covid is 1.5% that means 100000=1.5% infected so 98.5% didnít die of...
    76 replies | 3558 view(s)
  • kecked's Avatar
    04-01-2020, 03:47
    Wow thats a lot of damage. Wonder if it would be worth putting the fibers in a secondary jacket to catch all the combustion products. Thinking a larger diameter soft copper tube like refrigeration tube. You could the add a pressure escape outside the box through a cotton filter. Now if it goes...
    34 replies | 679 view(s)
  • dchammonds's Avatar
    03-31-2020, 19:38
    And now we return to the Gloom and Doom Channel where we'll hear our blue tasseled buddy Zerubbabel deliver an important end time message... His garments get rattier and filthier with every video...*retardo
    76 replies | 3558 view(s)
  • dchammonds's Avatar
    03-31-2020, 19:29
    Interesting choice of music- enjoyable!:) Thanks for sharing.
    3 replies | 209 view(s)
  • mixedgas's Avatar
    03-31-2020, 17:01
    quote: Steve it bothers me that you even know that video exists......ahem Incredible sense of space I have to say that./QUOTE] It bothers me that Youtube's screwed up algorithm sends me teenage stuff like that, really nasty rap and heavy metal videos, and political trype all the time, when...
    76 replies | 3558 view(s)
  • dar303's Avatar
    03-31-2020, 16:01
    I will let you know if I find some interesting ones! I will finish this one first and maybe try another project with a 30W one for an engraver later!
    34 replies | 679 view(s)
  • hakzaw1's Avatar
    03-31-2020, 13:54
    There is a possible error when thinking how many tests are currently available vs number of people that can be tested. IF we have 200,000 tests that is NOT how many people can be tested. Some people test neg but want more tests. SO with that and the fact that when a person with the virus is...
    76 replies | 3558 view(s)
  • keeperx's Avatar
    03-31-2020, 09:16
    As you are aware the visualization is not perfect. The "front and center" beam view does not provide an accurate representation of some of the beams. I normally watch shows in graphic mode and beam mode both to get the general impression (sometimes i can imagine the beams better than spaghetti can...
    3 replies | 209 view(s)
  • Lazerjock's Avatar
    03-31-2020, 07:00
    Thank you! I'll check it out today. Chris Just ran it on the computer since my projector isn't set up. Great show! Well done. Love that song.
    3 replies | 209 view(s)
  • james's Avatar
    03-30-2020, 21:09
    We all have to be actors in a really fucked up sci-fi series and play our parts. This might go on for more than one season. Get way into character of the ones who save lives. It might take a while but all that builds to a finale that is soooooo worth the wait.
    76 replies | 3558 view(s)
  • VDX's Avatar
    03-30-2020, 15:31
    ... ah, OK - now I remember him too -- he asked me for "common" prices, and if I would be interested in the diodes. I have some of the wrecked fiberlasers with mostly 9Watt-diodes and some with 25 or 30Watts - all with an attached 105Ķm fiber ... located in Germany ... FYI - attached the...
    34 replies | 679 view(s)
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