Homebrew PCBs

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]
>