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  • laserist's Avatar
    Today, 13:10
    laserist replied to a thread CYGN-B in The Lounge
    There weren't enough 351 bits available for all the different Dog stuff, so there were three switches added to the remote panel - two switches to select between 4 posibilities and one switch that inverted y axis output. The 352 card was introduced to distill the 3 - 351 decoder boards down to one...
    183 replies | 11610 view(s)
  • kecked's Avatar
    Today, 11:29
    I used two to make a crude raster laser video projector. worked ok but too slow. still beats scanners and resonant scanners.
    7 replies | 286 view(s)
  • kecked's Avatar
    Today, 11:27
    I have only used it for plexi and no it doesn't soak in. It is also just a quick shot at the surface. not a 20 min soak. frankly I do better by hand.
    37 replies | 2240 view(s)
  • kecked's Avatar
    Today, 11:18
    https://www.youtube.com/watch?v=TakazuzJVPc Genesis meets Yes meets Yellow Jackets with a smatter of zappa.
    290 replies | 76661 view(s)
  • kecked's Avatar
    Today, 11:14
    https://www.youtube.com/watch?v=5CwwsINqF4Q I really should do a laser show to this whole album. Begs for lumia and mixed media.
    290 replies | 76661 view(s)
  • VDX's Avatar
    Today, 11:12
    VDX replied to a thread 3D Printers - Who has them? in The Lounge
    ... does the solvent not soak into the material? When "vapor-polishing" ABS with Acetone you have to temper and vent it for some weeks, until it's "original" ABS again :confused: Viktor
    37 replies | 2240 view(s)
  • kecked's Avatar
    Today, 10:55
    vapor polishing with methylene chloride examples https://www.youtube.com/watch?v=7na8kQ78vkQ
    37 replies | 2240 view(s)
  • laserist's Avatar
    Today, 10:41
    https://www.edmundoptics.com/knowledge-center/application-notes/optics/how-to-design-your-own-beam-expander-using-stock-optics/
    7 replies | 132 view(s)
  • kecked's Avatar
    Today, 10:30
    Soap and water people. just soap and water.....
    4 replies | 78 view(s)
  • kecked's Avatar
    Today, 10:28
    For lasers the cheap stuff is fine for a single wavelength. Well so long as it handles the power level and has basic quality like most optics today. A glued doublet might actually be an issue.
    7 replies | 132 view(s)
  • kecked's Avatar
    Today, 10:24
    There is NO one I know of who has put themselves out there more than Bill. He doesn't have to but he does. No good deed goes unpunished.>:) WHY would anyone care what you do with your money or company. It isn't public. They don't hold shares. And to involve someone's family....come on. ...
    12 replies | 474 view(s)
  • VDX's Avatar
    Today, 10:10
    VDX replied to a thread 3D Printers - Who has them? in The Lounge
    ... you can try with melting/fusing plexi spheres or polymer fibers -- then eventual "flame-polishing" to make the back surface more transparent again ... Viktor
    37 replies | 2240 view(s)
  • kecked's Avatar
    Today, 09:47
    There was blood! I really stink at it. No patience. I have optical clear resin from form labs. Works well but you have to spend a lot of time polishing. I'd rather cnc plexi and then spend the time polishing that if forced.
    37 replies | 2240 view(s)
  • kecked's Avatar
    Today, 09:41
    Bill no good deed goes unpunished! All I can say is I saw it when you first did it a decade or more back and this is a different animal. An amazing animal. Thank you.
    10 replies | 176 view(s)
  • aberry's Avatar
    Today, 09:14
    aberry replied to a thread Galvo/Amp Upgrade in Modifications
    No, this will only work if the input terminals are isolated from the power supply, which is not going to be the case with virtually any laser driver. The positive modulation lines are still referenced to the system ground, which your diode drivers are still going to be connected to via the power...
    13 replies | 191 view(s)
  • jdavis7765's Avatar
    Today, 09:09
    jdavis7765 replied to a thread Galvo/Amp Upgrade in Modifications
    Sorry for the double reply, but two more quick questions. In the drawing I did above. Can you tell from the looks of it if the RGB two pin laser connectors look as if they would plug into their respective ILDA pins? It looks as though they do but I just want to be safe? Second question, would I...
    13 replies | 191 view(s)
  • norty303's Avatar
    Today, 08:41
    Does that mean this example content will work ok with EMULaser too?
    10 replies | 176 view(s)
  • jdavis7765's Avatar
    Today, 08:20
    jdavis7765 replied to a thread Galvo/Amp Upgrade in Modifications
    First of all, thank you all for the replies! I am reuploading the schematic, not sure what revising I need to do to omit the remote interlock box. I took electronics is highschool but I am far from perfect, but does this looks like what I would need to omit? Would I need to keep the diode and...
    13 replies | 191 view(s)
  • buffo's Avatar
    Today, 08:03
    This is an excellent demo of the Beam Brush effect! Thanks for posting this, Bill. I've seen some of the early work done by others, and PJ has also put together a few examples more recently that show what could be done with Beam Brush, but this abstract example by Mike is the one that really...
    10 replies | 176 view(s)
  • buffo's Avatar
    Today, 07:56
    I bought a polygon scanner off E-bay almost 20 years ago for like $30 just to play with. It was a pull from a grocery-store checkout scanner. I think it had 10 mirror facets, and each one was about an inch tall by maybe an inch and a quarter wide. Never did check the RPM, but it was fast! Nice...
    7 replies | 286 view(s)
  • Junktronix's Avatar
    Today, 07:13
    Pretty much what I figured. I've been using lenses from Thorlabs which seem pretty nice for the price. Maybe I'll get one (expensive) asphere to experiment with.
    7 replies | 132 view(s)
  • buffo's Avatar
    Today, 07:06
    That's what I was thinking... It's not that an achromatic lens offers any benefit over a standard aspheric lens when the beam is monochromatic, it's just that as a general rule achromatic lenses tend to be manufactured to higher tolerances than the cheaper, non achromatic aspheric lenses. ...
    7 replies | 132 view(s)
  • Junktronix's Avatar
    Today, 07:02
    I ended up with 2 liters of that crap. I had used nearly half a liter before I found out. If I seem stupider than usual, that's probably why. ANyway, the company paid to have the stuff shipped back for analysis. They said they'd replace it with something better, but I'm not sure if I'll trust it...
    4 replies | 78 view(s)
  • buffo's Avatar
    Today, 06:58
    buffo replied to a thread Galvo/Amp Upgrade in Modifications
    Yes, it is normal for the negative color signals to share a common ground. Most controllers use a single-ended output for the color modulation signal, so the R-, G- and B- signals are already common to ground from the controller end. You can do this, but a better method would be to use the...
    13 replies | 191 view(s)
  • Junktronix's Avatar
    Today, 06:57
    I, for one, am mostly disappointed that you don't drive a Lamborghini with a 100W RGB laser on the roof. I mean, that's the dream isn't it?
    12 replies | 474 view(s)
  • HankLloydRight's Avatar
    Today, 06:25
    Totally agree Facebook is bad for humanity. It's truly sad to have Facebook to inform you *very clearly* which of your friends are racist, anti-semitic, anti-science, conspiracy theorists. I have one "friend" from another enthusiast group to which I belong who makes post after post with all...
    12 replies | 474 view(s)
  • buffo's Avatar
    Today, 06:22
    Not that I'm aware of, but it's an interesting idea! Need to use a clear material though, which I think will rule out any of the FDM units. (I've never seen clear filament.) But I think you could use an SLA printer, assuming you could source some resin that stayed clear when it cured... ...
    37 replies | 2240 view(s)
  • buffo's Avatar
    Today, 06:15
    I remember the story from years ago. I even e-mailed one of the people who participated in the argument on Facebook. Basically I asked them what the hell the point was to all of this - why was this even remotely relevant? Their answer was that they were upset because they had once heard you say...
    12 replies | 474 view(s)
  • Pangolin's Avatar
    Today, 05:48
    Thanks for the note Adam, I think what's getting lost is that the whole thing is false. One long-time Pangolin hater was trying to make a point that I'm using Pangolin money to buy my son a Mercedes, and they fished on his Facebook page to find a photo that he and I mocked -- just for the sole...
    12 replies | 474 view(s)
  • buffo's Avatar
    Today, 05:46
    Love me some Tommy Emmanuel... There are lots of recordings of his unique arrangement of Beatles' classics, but I love this one because of how he breaks it down so you can clearly see how difficult it must be to play both parts of the song at the same time. Plus he's a great showman. :) ...
    290 replies | 76661 view(s)
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