Hi
yes PCB was etched and via made before lamination
then after lamination solder mask and silk was made
it not good idea to put aluminium on etch thank ;-)
Best regard
Marc Lalonde
--- In Homebrew_PCBs@yahoogroups.com, "John Dammeyer" <johnd@...> wrote:
>
> Thanks for the feedback. I take it that the thin FR4 is etched with the
> layout first before pressing. Otherwise the etchant would damage the core?
>
> John
>
>
>
> Automation Artisans Inc.
> http://www.autoartisans.com/ELS/
> Ph. 1 250 544 4950
>
>
> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
> On Behalf Of marc
> Sent: Wednesday, December 28, 2011 5:35 AM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: [Homebrew_PCBs] Re: Metal Core PC boards
>
>
>
>
> HI John
>
> is same as for multilayer board
>
> it use very thin FR-4 PCB (single or 2 side)
> then it hot laminate it to aluminium plate whit a Prepreg
> bethen pcb and the metal core
>
> but for laminate it you need a hydraulic press capable of heating
> to 230-250 deg Celsus so above glass transition point of FR-4
>
> Prepreg sheet was aviable from lpkf or local pcb shop
> it look like paper thin fibre glass fabric whit resin on it
>
> as for press i personally use 2 1/2" thick aluminium plate
> on on a metal frame 1" thick bolted together the 4 corner
> and put it on kitchen over
> for 60 minute then let it cold down for another 60 minute
>
> for multilayer it same but you replace metal core whit 2 or more 2 layer
> PCB each one separated by a Prepreg sheet
>
> then drill and plate via
>
> Best regard
> Marc Lalonde
>
> --- In Homebrew_PCBs@yahoogroups.com
> <mailto:Homebrew_PCBs%40yahoogroups.com> , "John Dammeyer" <johnd@>
> wrote:
> >
> >
> >
> > Has anyone done any metal cored PC boards at home? Or even know the
> > process for fabricating them?
> >
> > John Dammeyer
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>