Homebrew PCBs

I really don't guarantee anything other than it arrives in 1 piece.  I use
the laser for lots of things but mostly making stencils out of mylar and
kapton and cutting acrylic.  I sell the whole thing but you need to play
with it to get it right for your application which I don't do application
support other than through my web forum.

Basically for $2000 you get a laser that would otherwise cost you
$8000-10000 from epilog.  Software is through Mach3 and additional firmware
can be opensource for your own modifications.

A CO2 laser has 10micron wavelength = 0.39 mil.  A good quality lens can get
1mil pretty standard.  You will likely need to replace the $50 lens on the
$2000 laser with a $500 or $1000 lens from edmund optics if you want best
possible spot size.  It's pretty easy as it just unscrews and you can pop
another one on there on a standard threaded tube.

That thermark material is pretty sweet.  I talked to the guy and he said it
works fine on copper and is totally solidified.  No solvent will remove it
and it is non conductive and stable to 1200C.  Only way to remove it is to
sandblast it off.  That is the ultimate solder mask.  You can buy it in tape
form and raster scan your image onto the board.  Takes <1 minute.  I got
some samples to try with my laser and will report back.
On Wed, Oct 28, 2009 at 11:19 AM, Andres Hernandez
<afhernandez79@...>wrote:

>
>
> How can you garantee that I can get the best resolution for etching ( less
> than 1 mil) ?
>
> Less than 1 mil for spacing mainly.
>
> Is possible to print the legends with any kind of white inks ?
>
> Do you sell the whole thing ? SOftware, structure, mechanics, etc ?
>
>
>
> Ingeniero Andres F. Hernandez
> Pontificia Universidad Javeriana
>
> Celular    (300)7825582
> Casa       (572) 5572655
>
> ________________________________
> From: Henry Liu <henryjliu@... <henryjliu%40gmail.com>>
> To: Homebrew_PCBs@yahoogroups.com <Homebrew_PCBs%40yahoogroups.com>
> Sent: Wed, October 28, 2009 2:43:24 AM
> Subject: Re: [Homebrew_PCBs] Cool results with CO2 laser
>
>
> Keep an key on my website at www.fullspectrumeng ineering. com
>
>
> PCBs shipped today and first shipment of lasers is coming in two weeks. I
> designed the control circuitry so feel free to ask any questions :)
> H
>
> On Wed, Oct 28, 2009 at 12:10 AM, Cristian <bip@terranet. ro> wrote:
>
> >
> >
> >
> > >
> > >
> > >I have a 50W CO2 mach3 controlled XY gantry laser. I'm selling them
> myself
> > >for around $2000.
> >
> > Henry, I'm interested.
> > May I have some details, please?
> > Cristian
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
> [Non-text portions of this message have been removed]
>
>  
>


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