I've never had to deal with thermalclad, but you might look at these guys
www.PCBnet.com


-Denny



On 2/22/08, Brian Kraut <brian.kraut@engalt.com> wrote:
>
> Oops, forgot to tag it correctly.
>
> Brian Kraut
> Engineering Alternatives, Inc.
> www.engalt.com
>
> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf
> Of Brian Kraut
> Sent: Friday, February 22, 2008 12:43 PM
> To: Microcontroller discussion list - Public.
> Subject: prototype Thermalclad PCBs
>
>
> I need to do several prototype PCBs for high power LEDs on something like
> Bergquist Thermalclad board.  I work with an engraving company that does
> very high precision work.  They have the capability to engrave the circuit
> board traces without going through the dielectric then they can do my
> mounting holes and cut all the way through the aluminum substrate.
>
> I would get better results and spend less money if I could etch the copper
> layer instead of having them cut the traces.  Does anyone know if it is
> possible to etch this material without hurting the aluminum substrate and
> what chemical would be best to use for etching?
>
> I have been unable to find a PCB house that does prototypes and small
> volume
> production for a reasonable price.  Bergquist will only do a full 18" X
> 24"
> panel for over $2,000, but I can buy blank panels for under $50
> each.  From
> what they tell me, the PCB houses do not do their materials in house, they
> buy them finished and als have to buy full panels.  Any other suggestions
> for getting these boards in small quantities ag good prices is welcome.
>
> Brian Kraut
> Engineering Alternatives, Inc.
> www.engalt.com
>
>
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