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  1. kuhny1

    6 watt laser build, host tail cap can't handle the current

    Very cool idea benm, however I don't think I could cram a hall effect, an amplifier, and a mosfet into that tiny tail cap. I probably try it anyways because it would be pretty cool. Powering the amp off the batteries could be problem. But magnet switched laser would be a whole new thread on its...
  2. kuhny1

    6 watt laser build, host tail cap can't handle the current

    Thanks all for the replys. Sorry for my late response Redcowboy: Very, very nice mod their. I will definitely be trying that. And yes it's the cap of the SL S4 host. For those who recommended beefing up the spring, that seemed to have worked. I "threaded" another spring from another aixiz...
  3. kuhny1

    6 watt laser build, host tail cap can't handle the current

    Ok, I have found another spring and threaded it into the other one and it seemed to have lower temps by about 15 degrees. I can use this for now and just limit my on times. Luckily it cools down faster than it heats up. I'll still be searching for a higher rated tail cap with a beefier spring...
  4. kuhny1

    6 watt laser build, host tail cap can't handle the current

    Yes, there are 2 dimples on the metal ring that I can take off, but I'm not sure if I can get inside the switch itself. If I can, I'll try that. But I will still need to fix the problem with the spring nearly melting. I just measured it with a thermal couple and its hitting about 200F after a 15...
  5. kuhny1

    6 watt laser build, host tail cap can't handle the current

    So I recently built the strongest laser I have ever made, and have ran into a problem. Everything went together fine, and after a 5 second "on" to test, I took out the batteries to test current draw to gauge the life time of one charge. Right when I took off the tail cap I smelled the all to...
  6. kuhny1

    How i see what aircraft are in the immediate area for star pointing.

    Yeah that was another thing I was wondering too. You would think the beam would be way out of focus miles away. Unless you have some lens that isnt available to the public... Honestly though if I were a passenger on a jet, and saw a cloud glowing green I would be pretty amazed.
  7. kuhny1

    How i see what aircraft are in the immediate area for star pointing.

    Yeah, I would never use this to assume nothing is overhead, just more of a extra precaution, more as a heads up that there might be something on it's way that I can't see or hear. However I was not aware that it's only required in certain areas.
  8. kuhny1

    How i see what aircraft are in the immediate area for star pointing.

    So alongside with lasers and general electronics, ive been getting into another hobby, SDR. Basically SDR, for those who dont know, is software defined radio that allows you to tune into any frequency within range of the tuner. In my case i use a RTL-SDR. Anyways, i just got done looking over a...
  9. kuhny1

    Can the flex boost drive v5 be pulsed on/off

    So after 50,000 pulses it still outputs as strong as it did. No loss in power but my room did smell like burnt paper, wood, and plastic coated cardboard. In fact there is way to much power and i ended up clamping the LD down. When i do cut things I can either go way slower or turn the current...
  10. kuhny1

    Can the flex boost drive v5 be pulsed on/off

    So in the middle of building my engraver, I wondered how safe it was to pulse my LD driver. I know that laser diodes are pulsed themselves in optical drives and obviously rarely any damage occurs. But the driver they use in optical drives are meant to be pulsed. So it's not the diode I'm...
  11. kuhny1

    Power and wavelength for laser engraving?

    Mostly wood and paper type material (I should be able to cut cardboard/paper, balsa wood and maybe black foam, though it may require multiple runs). I might go without a z axis for simplicity reasons, and manually focus the laser. I probably going to have to make my own interperator because...
  12. kuhny1

    Power and wavelength for laser engraving?

    Most likely going to stick with the RAMPS with the a4988 drivers. I'll do some design searching and base mine off them. That's how I did it with the printer. At this point I'm not sure whether or not I'm going to write my own interperator or not. I think I might actually get away with using my...
  13. kuhny1

    Power and wavelength for laser engraving?

    I have noticed that since I had built my 1 watt, I can cut things relatively easy. So I was wondering why don't I make a laser engraver/cutter? I have made a 3d printer in the past and have decided to tear it apart and use the electronics to make the engraver. I'll just buy a kit then for a new...
  14. kuhny1

    Please help me with this

    As said, you would be better off with a low power green. A "safe" (<5mW) blue laser is hard to come by unfourtunetly :( Also, you said that you dont want to use mirrors, but they would be ideal. At least for single point pointing. A prism can give you around 4-5 beams or more depending on the...
  15. kuhny1

    Laws about Being in Possession of a Class IV Laser

    Wow, we need a permit to shine a laser anywhere in public?!?! That seems a bit outrageous. But then again there are stupid and ignorant people out there unfortunately :( Its a shame they ruin the hobby for people that use them responsibly... Luckily, I live out in the country and I don't have...
  16. kuhny1

    Can any Driver be Used for any Diode?

    Nice! Thanks for your reply's :yh:
  17. kuhny1

    Can any Driver be Used for any Diode?

    Thanks for the reply! Heres my 1 watt setup: The diode is a NDB7412T (datasheet) The driver is a Fixed Current Switching Supply set to 1A (here) Did I pick my diode and my driver right? As in, will it have a decent life on it?
  18. kuhny1

    Can any Driver be Used for any Diode?

    Hi, Sorry if this is a noob question, but this may be a simple question with a simple answer but I cant seem to find the answer. Ive been an electronics hobbyist for around 8 years (lasers for around 3 years) and have not actually messed around with constant current supplies :thinking...
  19. kuhny1

    Laws about Being in Possession of a Class IV Laser

    Hey everyone, So I have built my 1 Watt laser, and have seen that on laser pointer saftey that handheld class IV lasers are legal so long as they have the required safety features. If im not mistaking, most home built lasers have no safety features, including my of course (just a simple rear...




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