[Lab] Fire the laser!

[Adam Hill]

I used to work with both CO2 and YAG lasers. The real trick is power
density, which you can get with the right lenses (CO2/YAG lenses are a bit
spendy) and get by lengthening the pulse as long as possible. Obviously,
some substrates better absorb the energy from the different lasers better
than others but you can go a long way with high power densities. I haven't
looked at the details of the lab's CO2 laser yet so I can't comment
specifically on this lasers capabilities.

Best,
-ah

On Tue, Aug 30, 2011 at 9:35 AM, Darcy Whyte <darcy at siteware.com> wrote:

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> I don't think it's the right machine for PCBs.
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> On Mon, Aug 29, 2011 at 10:11 PM, Andrew O'Malley <aomalley at gmail.com>wrote:
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>> +1 on no cutting metal in the laser.
>>
>> > Message: 1
>> > Date: Mon, 29 Aug 2011 17:56:47 -0400
>> > From: bentfork at gmail.com
>> > Subject: Re: [Lab] Fire the laser!
>> > To: Darcy Whyte <darcy at siteware.com>
>> > Cc: lab <lab at artengine.ca>
>> > Message-ID:
>> >        <
>> CAOeih0Li+QfaDsviV_4ZJFbHCcsUnbS75rWsDwv_eRXmMSF_Yg at mail.gmail.com>
>> > Content-Type: text/plain; charset="iso-8859-1"
>> >
>> > The laser unfortunately  can't cut through metal.  The best one can do
>> is to
>> > coat the board in black spraypaint, remove it with the laser and use it
>> as a
>> > resist.
>> >
>> > http://blog.makezine.com/archive/2007/01/how-to-use-a-laser-to-etc.html
>> >
>> > On 29 August 2011 14:09, Paul & Andrea Mumby <themumbys at gmail.com>
>> wrote:
>> >
>> >> We should try some copper clad board to see if we can cut a PCB with
>> the
>> >> laser... I've seen some people with fantastic success, and that laser
>> is so
>> >> fine that we could get some really accurate PCB traces with it.
>> >>
>> >> - Paul
>> >>
>>
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