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Old 04-07-2011, 07:40 PM #1
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Default 40W CO2 Laser Photos

Here's a few photos I took today of a 40W CO2 laser setup. I'll be videoing it tomorrow so a video will be available soon. I fired it up today as it was slow in the afternoon. All I can say is to keep flammable items out of the beam, lol.

This is the tube on the bench with the cooling lines and power connections set up.


An image of the power supply


The cooling system is a small ThermoTek solid state recirculating chiller. I had to do a bit of retrofitting so I could use the smaller cooling lines.


The business end of the CO2 system


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Old 04-07-2011, 07:44 PM #2
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Default Re: 40W CO2 Laser Photos

These fascinate me, but I really don't ever want one. They scare me kind of a lot.

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Old 04-07-2011, 07:52 PM #3
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Default Re: 40W CO2 Laser Photos

I don't get to play with CO2 systems much but they are always fun when I do. No need to be afraid, just be respectful. Sealed CO2 systems are some of the least expensive, high powered systems you can get.
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Old 04-07-2011, 07:54 PM #4
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Default Re: 40W CO2 Laser Photos

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Originally Posted by FrothyChimp View Post
I don't get to play with CO2 systems much but they are always fun when I do. No need to be afraid, just be respectful. Sealed CO2 systems are some of the least expensive, high powered systems you can get.
My unease is mostly derived from the fact that I live in a college dorm right now. A CO2 laser in that environment is the opposite of a good idea.

I guess I'll revisit it when I have my own apartment/home?

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Old 04-07-2011, 07:57 PM #5
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Default Re: 40W CO2 Laser Photos

Yeah with that glass tube in your dorm room with the water cooling lines, your friends will probably be trying to stuff their smoke into your new "bong."
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Old 04-07-2011, 08:01 PM #6
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Default Re: 40W CO2 Laser Photos

Your HV lead seems rather close. The 30-40kV starting pulse might be enough to arc to your clamp.
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Old 04-07-2011, 08:05 PM #7
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Default Re: 40W CO2 Laser Photos

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Originally Posted by FrothyChimp View Post
Yeah with that glass tube in your dorm room with the water cooling lines, your friends will probably be trying to stuff their smoke into your new "bong."
Nooooo no no no. Not quite. I just don't trust people with high powered lasers.

Anything but my HeNe's waits until after 2AM or so to come out to play.

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Old 04-07-2011, 08:07 PM #8
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Default Re: 40W CO2 Laser Photos

It hasn't yet but I only tested it for a few seconds. Didn't see or hear any arcing. I'll make any adjustments tomorrow when I video it. I really wasn't going to run it today. My main goal was to test the cooling system and verify there were no leaks.
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Old 04-07-2011, 11:20 PM #9
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Default Re: 40W CO2 Laser Photos

Does that cooling device just circulate water? Or does it circulate and actually take heat away from water on the way through?

I'm not getting a C02 till I have a cement walled garage to work with.
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Old 04-08-2011, 12:00 AM #10
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Default Re: 40W CO2 Laser Photos

They usually have a TEC to cool down the water. Low cooling capacity but they're handy for stuff like quick testing.
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Old 04-08-2011, 01:19 AM #11
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Default Re: 40W CO2 Laser Photos

But a 40W tube only generates like... 250W of heat. When someone had one of those taken apart on PL, I think there were either 8 or 10 40W TECs, so it should be able to cool continuously.
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Old 04-08-2011, 01:27 AM #12
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Default Re: 40W CO2 Laser Photos

My system is a recirculating chiller. It cools the water via TEC. It will actually heat the water if I wanted it to. I have it set to standard temperature (25C).
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Old 04-08-2011, 01:44 AM #13
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Default Re: 40W CO2 Laser Photos

I didn't think they had that many TECs in them - they must not be driven very hard, as running full power would need a lot of airflow to keep them cool.

For something like these tubes, an automotive heater core or a PC water cooling radiator would be adequate.
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Old 04-08-2011, 02:52 PM #14
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Default Re: 40W CO2 Laser Photos

CO2's are fun, but there is nothing scarier than walking past the table its on, and feeling warmness on your face from a diffuse reflection

Also, they STING if you accidentally put your arm/hand thru the beam. Don't ask
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Old 04-08-2011, 03:01 PM #15
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Default Re: 40W CO2 Laser Photos

From a diffuse reflection?? Yikes...

Great. Now I'm never to going to be brave enough to own one.

Perhaps I'll permanently install one behind the wall, aimed to light my fireplace when I want a fire... and want one now!
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Old 04-08-2011, 07:59 PM #16
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Default Re: 40W CO2 Laser Photos

co2 are fun , not the best thing to put hand in front of :P , i only use water and radiator to cool mine does a pritty good job :P , watching something burn with a 1" diamiter burn circule looks kinda cool :P
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