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Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > 445nm Lasers



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Old 07-13-2010, 06:22 AM #1
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Default Turret Lab Mount diy

This is my labby in the process of being built. Next step is to insert an aixiz module into the center of the 2.25" diameter by 1.5" heat sink. The heat sink rotates up and down, similar to a turret or gimbal. I'm expecting to get 1.5W reliably from this build, with the very large heat sink.



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Old 07-13-2010, 06:31 AM #2
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Default Re: Turret Lab Mount diy

445nm build, I assume....

Can I just say that you're kind of messing with the purpose of a labby here.

Labbies lasing only parallel to an optic bench is important for safety, as beams stay can't be thrown up from the bench. I'm not sure your purpose here, but just be careful.
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Old 07-13-2010, 06:49 AM #3
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Default Re: Turret Lab Mount diy

Thank you for your safety concerns, which are valid for 1.5W 445nm. My design uses two large stainless set screws on either side of the mount axis. A 3/16" allen wrench tightens the heat sink into which ever position is desired. I call it a labby because it will have an AC/DC power supply( DDL/ATX computer). It isn't a labby in the strictest sense of the definition. I may use two DDL supplies in parallel to allow for cooler LM317 operation.
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Greenie - 100mw in diy aluminum host
650nm - 260mw in MXDL host with brass heatsink
650nm - 325mw in stainless Raygun host. The dot is so bright it's
PINK/ORANGE!
Thanks Jay! Thanks Drew! Thanks Larry! Thanks Glenn! Thanks Dave!

Pink - 500mW (white w/red , ok not till later)
Please don't dazzle aircraft! You wouldn't hit someone in the face normally would you?
Home of the stainless RAYGUN !
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Old 07-13-2010, 07:05 AM #4
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Default Re: Turret Lab Mount diy

Instead of two in parallel, buy a LM317K, which is the same device, but in a TO-3 package, they handle heat a lot better than TO-220.
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Old 07-13-2010, 07:12 AM #5
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Default Re: Turret Lab Mount diy

holy frolicking penguin batman!!!!!

nice heatsink
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Old 07-13-2010, 07:14 AM #6
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Default Re: Turret Lab Mount diy

Yeah, I'm going to have to agree. LM317T may not be up to the task. I'll look up your suggestion.
.....................Looks like I'll be going dual LM317K because they max at 1.5 amps. I'll be more comfortable with each regulator running without working too hard.
__________________
Greenie - 100mw in diy aluminum host
650nm - 260mw in MXDL host with brass heatsink
650nm - 325mw in stainless Raygun host. The dot is so bright it's
PINK/ORANGE!
Thanks Jay! Thanks Drew! Thanks Larry! Thanks Glenn! Thanks Dave!

Pink - 500mW (white w/red , ok not till later)
Please don't dazzle aircraft! You wouldn't hit someone in the face normally would you?
Home of the stainless RAYGUN !

Last edited by millirad; 07-13-2010 at 07:25 AM.
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Old 07-13-2010, 08:39 AM #7
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Default Re: Turret Lab Mount diy

Well maybe just an lm338k instead, with a good heat sink on the regulator.
__________________
Greenie - 100mw in diy aluminum host
650nm - 260mw in MXDL host with brass heatsink
650nm - 325mw in stainless Raygun host. The dot is so bright it's
PINK/ORANGE!
Thanks Jay! Thanks Drew! Thanks Larry! Thanks Glenn! Thanks Dave!

Pink - 500mW (white w/red , ok not till later)
Please don't dazzle aircraft! You wouldn't hit someone in the face normally would you?
Home of the stainless RAYGUN !
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