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CNI MGL-F-532 2.5W Burning Test






That beam stop though...
We need a way to easily make carbon foam for use as beam stops for some of these things.
I think there was a method of putting bread in a welded shut steel enclosure and baking it.
Im also recalling how charcloth and charcoal are made and wondering if that could be applied to another material to get a carbon foam sheet.
Or heck, maybe even just try a piece of hardwood charcoal moistened with water to keep it from igniting.
Personally I am fortunate to have a 30' room with brick and a cast iron fireplace at one end of it.
 
CynicalBrad said:
That beam stop though...
We need a way to easily make carbon foam for use as beam stops for some of these things.
I think there was a method of putting bread in a welded shut steel enclosure and baking it.
Im also recalling how charcloth and charcoal are made and wondering if that could be applied to another material to get a carbon foam sheet.
Or heck, maybe even just try a piece of hardwood charcoal moistened with water to keep it from igniting.
Personally I am fortunate to have a 30' room with brick and a cast iron fireplace at one end of it.
Click to expand...

Lol, yeah it's a weird looking beamstop indeed but it does the job which is all I need :beer:

-Alex
 
I would just be too worried about a stray reflection when I took goggles off to admire the beam of that beast. I'm even paranoid about where the scattered light from my 473nm labby goes.
On a side note though, just made a new beamstop and am about to fire up the 473 to admire the laser. I mean test the beam stop. Yeah lets go with testing the beam stop.
Just some 22ga aluminum sheet sanded to give it a matte surface and bent to deflect the beam down and scatter it.

Edit:Yep, this one works. gives a little bit of specular reflection but mostly diffused.
Now to get some sleep and work out something involving wood, aluminum foil, and the oven :evil:
 
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CynicalBrad said:
I would just be too worried about a stray reflection when I took goggles off to admire the beam of that beast. I'm even paranoid about where the scattered light from my 473nm labby goes.
On a side note though, just made a new beamstop and am about to fire up the 473 to admire the laser. I mean test the beam stop. Yeah lets go with testing the beam stop.
Just some 22ga aluminum sheet sanded to give it a matte surface and bent to deflect the beam down and scatter it.

Edit:Yep, this one works. gives a little bit of specular reflection but mostly diffused.
Now to get some sleep and work out something involving wood, aluminum foil, and the oven :evil:
Click to expand...

You have a pretty powerful 473(as I see in your sig), the beam on that must be just as stunning! :)

-Alex
 
It is very nice to look at and even has great divergence. (nearly on par with my 638nm spartan)
Only downsides are the one being so low powered I only power the full powered one and it can take a while to fully stabilize. Even now it is fluctuating a little. Takes like 15 minutes or so to get really stable.
I really need to attempt to repair the low power one or find some optics to make it a 532nm

Even with its quirks though I love it and feel I stole it for what I gave for it.
Such a nice color and the power doesn't even need anything in the air to clearly see the beam from the side. I want to get a lumia setup going with it but don't even know where to start with a limited budget.

Edit: oh and stray <1mW beams. 3 of them. pretty sure they are coming from the PBS cube and flat protective output Lens on the laser though.
One right next to the dot so close you can only see it blocking the main beam and two of them to the upper left.
 
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Hap said:
Just testing my new CNI lab :pop:



-Alex
Click to expand...

Nice video , gorgeous beam, what's the run time on a unit like that?

P.s. never seen anyone cook an omelet like that before, when do you add the cheese? :)
 
BobMc said:
Nice video , gorgeous beam, what's the run time on a unit like that?

P.s. never seen anyone cook an omelet like that before, when do you add the cheese? :)
Click to expand...

I think the runtime is 100%, no duty cycle as with most lab units. The head has a fan inside as with the PSU so.... :p

The cheese is added after the eggs are burnt to a crisp :D

-Alex
 
Hap said:
I think the runtime is 100%, no duty cycle as with most lab units. The head has a fan inside as with the PSU so.... :p

The cheese is added after the eggs are burnt to a crisp :D

-Alex
Click to expand...

Yep, will be 100% duty cycle seeing as it has the fan and attached heatsink. Some lab lasers require an "external" heatsink of some sort to dump all their heat into, but those don't have fans. The 2W 445 I sent to Alaskan requires an additional heatsink of some kind to stay at a reasonable temperature for example.
 
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Thanks for sharing the video...
I see you finally got the Driver going...

Jerry
 
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