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  1. Devil_Master

    Alternatives to DTR for NUBM44 modules?

    Are you and barnettlasers4201 the same seller? I've exchanged messages with both barnett_unlimited and barnettlasers4201 on Ebay.
  2. Devil_Master

    Alternatives to DTR for NUBM44 modules?

    I emailed DTR on September 9 for information about the purchase of a NUBM44 module, and he hasn't answered yet. His last post here is dated September 5, and his last visitor message, dated June 12, ends with " when ever you can get back to me that would be great!" DTR has (or... had?) a great...
  3. Devil_Master

    What's a reliable source for 18650 batteries that ships to EU?

    Great. I'm definitely gonna buy from them, then. I see they also have chargers, so that solves another problem.
  4. Devil_Master

    What's a reliable source for 18650 batteries that ships to EU?

    LiIonWholesale only ships to North America, unless the orders are for 500 or more batteries. I'm in the EU. What is a reliable site to buy the correct number (how many?) of 18650 batteries to power a NUBM44 diode? I've seen these batteries on Amazon (UK) but I don't know if I can trust that they...
  5. Devil_Master

    What is this set of optics used for?

    Are there pictures of the setup?
  6. Devil_Master

    What is this set of optics used for?

    I've been reading about the NUBM44 diode, which is very powerful but has a highly divergent slow axis, and I've been suggested to use this set of lenses to reduce its divergence. Premise: I've never dabbled into the optics part of lasers, only into the burning part. Well, it's never too late to...
  7. Devil_Master

    5W 445nm labby from OdicForce: did anyone try it?

    No, what I bought in 2014 was a 1W handheld laser, which now isn't being sold anymore (EDIT: this one). I wrote I bought a laser from them, not this laser. My questions about that laser were about temperature and battery capacity, but then I decided that I could find out the answers by myself...
  8. Devil_Master

    5W 445nm labby from OdicForce: did anyone try it?

    I bought a laser from them in 2014. Before buying it, I had emailed them with various questions, but they never answered. Thus, I mentally filed them under "quick to ship products, but they won't answer questions".
  9. Devil_Master

    5W 445nm labby from OdicForce: did anyone try it?

    But I filtered components for maximum output current, I selected 2.2A and the results showed that component... Would it work, though? If this is the voltage divider, then adding a load between Vout and ground would be akin to connecting another resistor in parallel to R2, so the actual voltage...
  10. Devil_Master

    5W 445nm labby from OdicForce: did anyone try it?

    /googles "TTL"... Aha, so that's what TTL is for. Okay, so the effective power of the laser would be the maximum power times the TTL duty cycle. Makes sense. Do you think the circuit I attached would make a good power supply for that laser (in case I just want to run it at full power)? I...
  11. Devil_Master

    5W 445nm labby from OdicForce: did anyone try it?

    This laser: 5W 450nm Blue Focusing Laser Module (12V) with TTL Driver - OdicForce - I noticed the title says 5W, but the description mentions "4+W". So, has anyone measured its actual power with a meter? - What are the dimensions of the driver? The picture only gives the dimensions of the laser...
  12. Devil_Master

    Where can I get first-surface mirrors?

    I already looked on Ebay. The sellers are located either in the US, China or South Korea. I'm in the EU, which translates to at least two months of waiting before receiving the mirror. If something is wrong with the mirror and I need a replacement, it means two months before they get the "wrong"...
  13. Devil_Master

    Where can I get first-surface mirrors?

    Okay, so this post is not strictly related to lasers. I need a first-surface mirror (1.5 mm thick) to repair an old head-mounted display from Virtuality, which uses a pair of acrylic first-surface mirrors to reflect the images from the displays into the lenses. I had to remove the right-hand...
  14. Devil_Master

    Very heavy host ideas

    Sintered tungsten host? And in case you want some bling... gold-plated sintered tungsten host? It would almost weigh the same as a solid gold host.
  15. Devil_Master

    What are they made for?

    And for more info: InfoComm International, the Audiovisual (AV) Association - Do Lasers Mean a New Age for Projection Technology?
  16. Devil_Master

    Has there been a law change in the EU?

    I've noticed that OdicForce doesn't offer 1W handhelds anymore (the highest power available right now is a 1W labby), while Blord hasn't posted anything for over a month, not even to let laserdonkey know if he's alive. This could be a coincidence, but it could also mean that laser laws in the EU...
  17. Devil_Master

    In Stock : 3-3.5Watt 445nm Copper Dominator, 2x26650 blue laser.

    What do you mean by "lock it down"? I have a Dominator, and the focus seems pretty stable to me. While the 1W laser I had bought from OdicForce has a focus ring that wobbles around, leading to sudden defocussing as I touch it and cause it to tilt, this does not happen with my Dominator. If this...
  18. Devil_Master

    A piece of laser history... or a memory to shattered dreams

    That's what I did too. Not only about lasers, but also about Tesla coils, cyclotrons (I wanted to build a particle gun) and rocket engines (I also wanted to build a jetpack). Of course, as soon as I could make calculations about power and weight, I realized why there are no particle guns and...
  19. Devil_Master

    A piece of laser history... or a memory to shattered dreams

    Ha ha! I did exactly the same thing once, including saving the plans to a floppy disk, except that I did it in 1998 (were floppy disks still around in 2005? :-P ) and the plans were not for a ruby laser, but for a 1W gas laser. I still remember they suggested to use a salt window for the beam...
  20. Devil_Master

    A piece of laser history... or a memory to shattered dreams

    Check out the article I've found: Build your own LASER! | Modern Mechanix It appears that the November 1964 issue of Popular Science had an article that taught people how to build a ruby laser. I wonder if anyone reading this forum was already around back then to attempt such a build (or...




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