[Lab] Fire the laser!

[Michael]

I've also seen PCB copper raster cut with a laser, but it requires a lot 
of power....
Ah, here it is: http://www.youtube.com/watch?v=PhH05jNyjCk
It gets into it at 0:28 seconds...


Michael
http://NoMiDesign.net/
http://krazatchu.ca/


On 8/29/2011 9:01 PM, Paul & Andrea Mumby wrote:
> I could have swore I saw somewhere someone successfully cut PCBs with 
> a laser (not doing the cut the resist and chemically etch thing). But 
> I might be wrong...
>
> If that's the case, the easy way is still either toner transfer, or 
> job the boards out to Seeedstudio.
>
> - Paul
>
> On Mon, Aug 29, 2011 at 6:27 PM, <bentfork at gmail.com 
> <mailto:bentfork at gmail.com>> wrote:
>
>     If you want to push the power of the laser I think one would need
>     to do something wacky , like sending pure oxygen in to get the
>     heat high enough to start burning metal.
>
>     There is a group that has made a modification to the air assist
>     system.  They channel the air and the laser through a gap to try
>     and get more cutting power.
>
>     http://www.factengineering.com/turbo.php
>
>     I haven't seen a need myself for this, but I may look into it in
>     the future If I find I'm doing a lot of cutting.  It does open the
>     road to potential hacking in the future, definitely if you start
>     mixing gases.
>
>
>
>     On 29 August 2011 17:58, Darcy Whyte <darcy at siteware.com
>     <mailto:darcy at siteware.com>> wrote:
>
>
>         That's what I thought....
>
>         I think the YAG lasers can cut metals but those seem a little
>         more expensive to say the least.
>
>
>         On Mon, Aug 29, 2011 at 5:56 PM, <bentfork at gmail.com
>         <mailto:bentfork at gmail.com>> wrote:
>
>             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 <mailto: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
>
>
>                 On Fri, Aug 26, 2011 at 9:59 AM, <bentfork at gmail.com
>                 <mailto:bentfork at gmail.com>> wrote:
>
>                     Hehe.  Good idea.
>
>                     It isn't that small yet.  Using three credit cards
>                     I can build two trebuchettes.  It is based on
>                     these guys design, which uses no glue or tape to
>                     hold the whole thing together:
>
>                     http://www.siegetoys.com/design.html
>
>
>
>
>                     On 25 August 2011 18:47, jim kiskis
>                     <jim.kiskis at gmail.com
>                     <mailto:jim.kiskis at gmail.com>> wrote:
>
>                         well if you get your credit card size
>                         trebuchet working will it fold
>                         up into one and you can use it ? :)be
>                         intereesting going to the store
>                         and say this is a trebuchet card and do you
>                         take them and if they
>                         don't then you can lay siege to them :)
>
>
>                         On Thu, Aug 25, 2011 at 12:25 AM,
>                         <bentfork at gmail.com
>                         <mailto:bentfork at gmail.com>> wrote:
>                         > Good to see its all getting put together.  I
>                         should finish off my business
>                         > card sized trebuchet...
>                         >
>                         > On 24 August 2011 20:58, Darcy Whyte
>                         <darcy at siteware.com
>                         <mailto:darcy at siteware.com>> wrote:
>                         >>
>                         >> Here are some pictures and video of the
>                         first laser cuts at ArtEngine.
>                         >> http://mambohead.com/2011/08/fire-the-laser/
>                         >>
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