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Old 04-30-2008, 01:43 AM   #1
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Default Would you use your laser to start the camp fire

I was thinking it would be much safer than using matches or other close up things.
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Old 04-30-2008, 02:15 AM   #2
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Default Re: Would you use your laser to start the camp fir

i definitely would if i had a powerful enough laser to start a flame. I'm not sure of the actual power required, but just a guess would be maybe on the order of .5-1 W onto a black surface. Although, I suppose wood would work better than paper since paper tends to just smolder away.
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Old 04-30-2008, 02:39 AM   #3
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Default Re: Would you use your laser to start the camp fir

I've started a fire with a DIY red at around 150mW. I made a leaf ember, then I threw a pile of leaves on top of that and then I threw some wood on it for a nice fore. It is much easier to use matches (or a propane torch) though.
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Old 04-30-2008, 02:46 AM   #4
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Default Re: Would you use your laser to start the camp fir

Does anyone know how much power is required to ignite newspaper, assuming that the laser has a beam diameter of 1 mm?
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Old 04-30-2008, 03:29 AM   #5
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Default Re: Would you use your laser to start the camp fir

Probably more than 500mW, however I think it might be possible with much less... My X series laser averages at just 118mW and can make paper ember easily. I'd say with some patience and effort it would probably be possible with 200mW.
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Old 04-30-2008, 09:10 AM   #6
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Default Re: Would you use your laser to start the camp fir

As cool as it would be to start a campfire by whipping out a high power laser, it isn't really practical

If I had a laser that powerful, I certainly would try and use it to light a camp fire. But on a normal camping trip, I'd just use matches (I mean, why would you chance your high power laser getting wrecked by bringing it into the wild anyway?)
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Old 04-30-2008, 11:47 AM   #7
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Default Re: Would you use your laser to start the camp fir

Well, you could bring a Pelican... but that's a bit silly isn't it, bringing nice things on a camp.
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Old 04-30-2008, 11:48 AM   #8
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Default Re: Would you use your laser to start the camp fir

Look at teh fire I started with mah lazor
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Old 04-30-2008, 11:53 AM   #9
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Default Re: Would you use your laser to start the camp fir

LIES!
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Old 04-30-2008, 11:58 AM   #10
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Default Re: Would you use your laser to start the camp fir

Quote:
Originally Posted by VillageIdiot
LIES!
Yea, you're right, I just cooked the meat directly with the laser, without actually starting a fire :-[ ;D
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Old 04-30-2008, 12:16 PM   #11
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Default Re: Would you use your laser to start the camp fir

Quote:
Originally Posted by Switch
Yea, you're right, I just cooked the meat directly with the laser, without actually starting a fire :-[ ;D
Neat.

Can't wait for the future to happen, so lasers like that are cheap

(I mean, imagine like a laser that when you point it at something, it's like sticking it in a microwave... so you can cook food just by pointing your little laser at it!)

...

(If those get invented and are cheap enough for the general public... well, I think we can kiss civilization goodbye...)
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Old 04-30-2008, 12:43 PM   #12
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Default Re: Would you use your laser to start the camp fir

Bro, this is you if the general public get their hands on 20W+ handhelds.



we'll be fryin' up some worm kebabs

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Old 04-30-2008, 12:49 PM   #13
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Default Re: Would you use your laser to start the camp fir

I imagine you would need some kW to actually cook something over a larger area.But maybe you could make a somewhat collimated microwave beam with a parabolic antenna or...(I don't know what I'm talking about exactly) like the active denial system and when you shoot it at something it will have the same effect as sticking it in the oven. :-/
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Old 04-30-2008, 12:51 PM   #14
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Default Re: Would you use your laser to start the camp fir

All this talk about fried worms and cooking things is making me hungry, I'm off to cook tea
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Old 04-30-2008, 01:25 PM   #15
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Default Re: Would you use your laser to start the camp fir

My experience with a well focused 1W 808:
Paper - white paper doesnt even get warm but as soon as the focal point hits the tiniest grain of dust it vaporizes it leaving a char on the paper and i can start cutting it! Thing is it doesn't light the paper, just burns on the spot. Black-body radiation is visible if you trace a line, once a char is started it's able to sustain a line due to it burning slightly ahead of the laser.
Wood -
Pine - gets mildly warm, but once you hit a dark spot it's easy to do the same thing as on paper and draw on it. Nothing more than smoke and surface char though.
Redgum - same as pine but it doesn't work as well.

Just as an idea... I once sat down to cut through a match with only a 1W laser. It took about 10 minutes to get through it.



And re laser protection: I highly recommend anyone who has a laser gets a Pelican case.
You wanna protect something, put it in a pelican. Forever warranty, you break it they replace it.
I do sound like a commercial but after having had 6 pelican cases in the family (only sold on because of size constraints) I'd trust anything to them. Honestly, I'd take a $20,000 portable laser into the middle of a lake or anywhere really if it was in a Pelican.
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Old 04-30-2008, 02:31 PM   #16
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Default Re: Would you use your laser to start the camp fir

Okay, now I hear again about the Pelican case.

Does someone have a link to this product?
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