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    445 focusing

    Ah alright, I just thought that it was strange that it grows so much within a few ft. Thanks ill have to expirement with what I can find.
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    445 focusing

    I focus mine at 3ft but the diameter on the dot grows dramatically within a few inches. I would like to have a continuous small dot at long distances but cant seem to find the correct lens kit. Anyone on this thread know of any?
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    DIY Laser Power Meter

    Haha I know right.. I looked at the date after I replied X)
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    DIY Laser Power Meter

    I am also interested to see if this is still going on, I would like to participate in the group buy if its still available.
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    445nm DIY 2w laser build problems

    Update: I installed the new driver set at 1.5a, it worked great for a while but eventually killed the diode. My wife says the newer version with the bigger driver looks like crap compared to what it was before the "upgrade". I completely agree with her though, I will post before and after photos...
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    445nm DIY 2w laser build problems

    Here are the completed images with it running at 650ma, I have an upgraded 3a driver and lens on their way! Video soon with the upgrades! Again the cycle time so far is just a guess, however with the extremely large driver heat sink its not an issue; I can keep it on for minutes with...
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    445nm DIY 2w laser build problems

    I now have everything in and am installing the driver into its heat sink, however I ordered arctic silver 5 thinking it would keep the driver stuck to the heat sink but I think I should have purchased the arctic silver thermal adhesive instead. Anyone have any thoughts on this?
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    445nm DIY 2w laser build problems

    Why do you say ill get a small duty cycle? If so I'm going to add miniature fans for better cooling to see if it helps.
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    445nm DIY 2w laser build problems

    This will greatly help in any other builds I do, thanks very much!
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    445nm DIY 2w laser build problems

    Thanks, would it make a conciderable difference in the measurement between the two test loads? i may have to get a few of those to correctly test the newer driver. I appreciate the info!
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    445nm DIY 2w laser build problems

    Thanks, unfortunately one of the gold connections chipped off the driver, I did some tight space soldering but don't want to risk hurting the diode so a new one is on its way. Once it's in along with some thermal paste ill be able to bond it to the heat sink and get some shots up :) This was...
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    445nm DIY 2w laser build problems

    Thanks! I wanted to make my own custom gun but I had this laying around.. So I got to choppin! Lol
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    445nm DIY 2w laser build problems

    Still not finished with the circuit or the cosmetics but its just to give an idea. The battery is in the clip and is easily detachable and the safety works just like a normal gun. Also I'm hoping the gun will kinda turn blue when the laser is on.
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    445nm DIY 2w laser build problems

    Alright I have the driver set to 900ma, I tested it with the laser diode for a few seconds and it started flashing (I don't have the driver inside the heat sink yet so I figure a fail safe was tripped or it was just getting too hot). Once I get the heat sink in place I'm going to finish the...
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    445nm DIY 2w laser build problems

    Lol yeah, I'm new to lasers, not electronics! :) Then again I wouldn't be surprised to see them mixed up in a state of eagerness and impatience.. Haha!
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    445nm DIY 2w laser build problems

    Thanks! The AS5 is Arctic Silver 5 thermal paste, one of the most commonly used thermal pastes it seems.
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    445nm DIY 2w laser build problems

    Update: I now have the correct tools to test the driver, I chose my host and have everything placed and am waiting on a 16850 battery holder. I purchased some AS5 to add a heat sink to the driver since its going to be running around 1.7a, but am having some issues on exactly how it should be...
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    Iron Man Laser Gauntlet

    Very nice!
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    445nm DIY 2w laser build problems

    Yeah my dmm only goes to 200ma, so I'm going to have to buy a new one, but the test load supplies are on the way.
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    445nm DIY 2w laser build problems

    So without the correct means of testing the driver I did get it to what my dmm reads as 9.1 at the "200v" with the wavy line over it.. It now has a faintly visible beam in the dark and does have a faint heat index that is not enough to burn paper. I am waiting for the diodes I purchased to...


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