Old 03-13-2017, 05:02 PM #17
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Default Re: Laser fire safety.

I would be leery about making a flame thrower with compressed air as the propellant, because when it gets low and starts sputtering, if that flame front gets past your valve your canister will explode.

I mean you would likely stop as soon as your stream broke up, but think about hairspray cans, that flame chases close to the can.

-----edit-----


From fire safety to flame throwers...why not.



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Old 03-13-2017, 05:10 PM #18
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Default Re: Laser fire safety.

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Originally Posted by Alaskan View Post
Yep, been there, done that, gasoline too flammable, use naphtha instead.
I like diesel for times I need to start a fire. You don't need to worry so much about the vapors exploding in your face.
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Old 03-13-2017, 05:21 PM #19
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Default Re: Laser fire safety.

Quote:
Originally Posted by Razako View Post
I like diesel for times I need to start a fire. You don't need to worry so much about the vapors exploding in your face.

Use a 2/3 mix of diesel with 1/3 gasoline, lights easier, but not as easy and burns longer. At least, IIRC that's the mixture.
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Old 03-13-2017, 05:27 PM #20
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Default Re: Laser fire safety.

Quote:
Originally Posted by RedCowboy View Post
I would be leery about making a flame thrower with compressed air as the propellant, because when it gets low and starts sputtering, if that flame front gets past your valve your canister will explode.

I mean you would likely stop as soon as your stream broke up, but think about hairspray cans, that flame chases close to the can.

-----edit-----


From fire safety to flame throwers...why not.

That video awesome lol
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Old 03-13-2017, 05:35 PM #21
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Default Re: Laser fire safety.

I'm going to stop here, the fun ideas I could spout off are for someone with a lot of property, dirt without grass or any trees, otherwise it's too dangerous.
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Old 03-13-2017, 05:47 PM #22
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Default Re: Laser fire safety.

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Originally Posted by RedCowboy View Post
I'm going to stop here, the fun ideas I could spout off are for someone with a lot of property, dirt without grass or any trees, otherwise it's too dangerous.
Don't stop! There's plenty of that where I live!
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Old 03-13-2017, 07:11 PM #23
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Default Re: Laser fire safety.

There is always Napalm. Just kidding, do not!
Accidentally made a form whilst a doing plastic making project and disposed without testing. Ridiculously easy to make, but not going to start listing how. Don't want everyone knowing how easy it is. Mine was stumbled on by mistake.

Warning: Napalm is highly dangerous. Do not try yourself.
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Last edited by CurtisOliver; 03-13-2017 at 07:54 PM. Reason: Too dangerous.
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Old 03-13-2017, 08:21 PM #24
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Default Re: Laser fire safety.

Quote:
Originally Posted by CurtisOliver View Post
There is always Napalm. Just kidding, do not!
Accidentally made a form whilst a doing plastic making project and disposed without testing. Ridiculously easy to make, but not going to start listing how. Don't want everyone knowing how easy it is. Mine was stumbled on by mistake.

Warning: Napalm is highly dangerous. Do not try yourself.
Don't you just melt styrofoam into gasoline or something? I remember making it that way when I was like 15.
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Old 03-13-2017, 08:27 PM #25
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Default Re: Laser fire safety.

Quote:
Originally Posted by Razako View Post
Don't you just melt styrofoam into gasoline or something? I remember making it that way when I was like 15.
There are many ways, but yes. It is so simple, but so deadly. It is scary that individuals can make that stuff as kids and even make it by accident.
Mine used Acetone instead, but kerosene is meant to be the best.
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Optotronics offers some of the highest output DPSS Portable Greens on the market. Their 1.4W RPL-II is by far their most amazing product and is known to be overspec.
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Old 03-17-2017, 01:38 AM #26
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Default Re: Laser fire safety.

Quote:
Originally Posted by RedCowboy View Post
YES, that's a good point, but my big silver industrial cans are for my own use, I don't refill the little red ones. I could paint " Contains Water " on them, just incase for some reason someone else gets ahold of one.

------edit------

Actually my big silver cans are marked as water type, but you do have a good point, water on a grease fire is KABOOM because the steam can easily make a fuel air bomb out of it.
The bigger silver ones are less problematic indeed, at least in the sense that someone from the general public will probably not grab hold of it and just presume it's a general purpose powder type.

I remember having the really big CO2 ones (on a wheeled cart) in the chemistry department. Those things are very good for putting out most fires except for chemicals that react with CO2, causing the minimal amount of damage to equipment when used.

If you did experiments that could not be put out with CO2 or even halon having something like a power (or argon) type available was mandatory, but those things are really only a very last resort: that powder absolutely goes everywhere and would make an entire lab unusable for quite some time, probably worse than just slamming the fume hood door shut and letting things burn out.

The powder type is popular because it's quite universal and effective in putting out fires, but it is very likely to destroy whatever you spray it on. If you have something like a small fire under the hood of a car using CO2 would be much better, as the power would be quite likely to damage a running engine beyond repair.

And that power really does go -everywhere-. A friend put out a fire on the ground floor with it at some point, and we found the powder residue in cupboards 3 floors up months later
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