Old 01-09-2008, 10:58 PM #17
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Default Re: """""My DIY Red Shoebox Laser"""" question

You mean this one? http://www.dealextreme.com/details.dx/sku.5914
If so, it won't be enough, you need to press the entire module with the diode in it into a heatsink if you're planning on driving it at 250 mA.
Something like this: (image by jayrob)
The heatsink doesn't need to be so big, but the bigger it is the better.
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Old 01-09-2008, 11:49 PM #18
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Default Re: """""My DIY Red Shoebox Laser"""" question

That DX module does provide adequate heatsinking for running at 250ma's and I did indicate it in the first page of this thread. But you do need to run duty cycles..I am not sure how long...maybe a minute on...a minute off...something like that.
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Old 01-10-2008, 12:04 AM #19
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Default Re: """""My DIY Red Shoebox Laser"""" question

Ooops, sorry, I guess it was just me as I feel a lot safer if I have a heatsink on the module, but if you say it's ok as long as the laser doesn't stay on for a long time, then I guess it should fine. ;D
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Old 01-10-2008, 02:47 AM #20
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Default Re: """""My DIY Red Shoebox Laser"""" question

Yeah it really is..I am using one with a SenKat diode running at 250ma's. It's a darn good burner too.
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Old 01-10-2008, 07:43 PM #21
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Default Re: """""My DIY Red Shoebox Laser"""" question

alright if you guys say so. ; ) say...if u got about 6, 30-35mm washers,then drilled them all out according to the housing size, Then, stick them all 2gether and push the housing inside...would this be an adequate heatsink?
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Old 01-10-2008, 08:21 PM #22
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Default Re: """""My DIY Red Shoebox Laser"""" question

As long as the module fits tightly, it should work, or you can use arctic silver, but I've heard that getting a tight fit is a much better option.
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Old 01-12-2008, 01:42 AM #23
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Default Re: """""My DIY Red Shoebox Laser"""" question

ok...ummm this is random,but y use the LM317? y not just any other one?
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Old 01-12-2008, 05:53 AM #24
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Default Re: """""My DIY Red Shoebox Laser"""" question

Because it is cheap, easily available, easy to understand and work with...
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