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Author Topic: PS builds a laser ... and so can you  (Read 1483 times)
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cup58
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« on: October 11, 2012, 05:10:15 05:10 »

Published in the November 1964 issue of Popular Science magazine, the article "PS builds a laser ... and so can you" is perhaps the first hobby laser project published. It's interesting to see the electronic circuit is quite simple.

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solutions
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« Reply #1 on: October 11, 2012, 05:52:26 17:52 »

Does it use a ruby rod and Xenon flash pump, which i believe was the tech of that day? If so, building one from a CD burner is a LOT cheaper
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Ichan
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« Reply #2 on: October 11, 2012, 07:14:53 19:14 »

Interesting article.

For these days, a 40 Watt CO2 laser tube is cheap enough to play with.

-ichan
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solutions
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« Reply #3 on: October 12, 2012, 08:59:47 20:59 »

The trick with CO2 is the optics. Got plans for a cutting/engraving 40W+ setup?
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Magnox
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« Reply #4 on: October 12, 2012, 09:18:23 21:18 »

I have a book with plans for a DIY 30W CW CO2 LASER and PSU.

http://www.amazon.com/Working-Fiberoptic-Infrared-Space-Age-Projects/dp/0830627243

If anyone is really interested, I could scan it. I hope your glass-blowing skills are up to it though...
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Ichan
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« Reply #5 on: October 12, 2012, 10:50:38 22:50 »

Quote
Got plans for a cutting/engraving 40W+ setup?

Here is on the web: http://www.buildlog.net/cnc_laser/index.php

For laser tube, lens, power supply, etc - just search on ebay with "CO2 laser tube".

I might write my own build someday.

-ichan
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snowman
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« Reply #6 on: October 13, 2012, 01:48:00 01:48 »

I have a 40w chinese laser and I really appreciate if someone posts laser power supply plans. my power supply does not support pwm input. I need to replace it, without pwm its just a toy. it cannot be used with mach3 like cnc software without pwm input.

PS: and be careful with chinese laser tubes. their gas leaks in time. almost every tube leaks, yes, but come cheap tubes have 6 months shelf life. sealing glass tube with metals is tricky I believe.
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solutions
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« Reply #7 on: October 13, 2012, 05:37:35 05:37 »

I have a book with plans for a DIY 30W CW CO2 LASER and PSU.

http://www.amazon.com/Working-Fiberoptic-Infrared-Space-Age-Projects/dp/0830627243

If anyone is really interested, I could scan it. I hope your glass-blowing skills are up to it though...

The book is $0.05 on Amazon.com....

The Chinese substitute materials - glass to metal seals need to be pure, O2-free, copper....but it is expensive, so to them...copper is copper...
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Ichan
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« Reply #8 on: October 13, 2012, 09:47:54 09:47 »

Many 40W chinese laser tube for that small laser engraving machine (the $600-ish machine) actually have a real power of 25W, I've been told by one of the machine manufacturer - better ask the seller if the tube is true 40W or not, it should not be lower than $120 at it's origin.

Lower power chinese laser tube mostly only have about 2000 hours lasing time, but higher grade reci tube (80 - 150W) have 10000 hours lasing time warranty and several years of self life.

-ichan
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