Instead of modifying a George Foreman grill how about sandwiching the board
between two thick aluminum plates, using enough c-clamps to insure even
compression and placing the whole thing in an oven at 400 degrees for about
30 minutes?
Dave
At 10:43 AM 4/3/2008, you wrote:
>I am new to this group, and never thought about making my own PCB's.
>I have usually ordered them, but I see the benefit and am curious
>about this.
>
>Now on this thread...It would seem to me that you could modify a
>George Foreman grill to use flat plates instead of the ribbed ones
>and limit the heat and whammo a simple small double sided hotplate.
>
>Am I completely wrong on this? If not, I might look into it as I
>have a couple laying around. And even so, they are only like 20
>bucks for the small one.
>
>Brian
>
>--- In
><mailto:Homebrew_PCBs%40yahoogroups.com>Homebrew_PCBs@yahoogroups.com,
>"Bertho Boman" <boman01@...>
>wrote:
> >
> > Hi Mark,
> >
> > If you are using a hotplate, the contact between it and the PCB
>affects the
> > PCB's temperature. In that case, you also ought to have a cover
>that
> > matches the hotplate temperature (good contact). That then in
>effect forms
> > a mini-oven with uniform temperature.
> >
> >
> >
> > It might be more convenient to have an oven with proper air
>circulation and
> > independently of the oven temperature control, attach a
>thermocouple to the
> > bottom of the PCB to monitor its temperature.
> >
> >
> >
> > Do you have any pictures of the modified laser printer?
> >
> > Bertho
> >
> >
> >
> > From: Mark Lerman Sent: Thursday, April 03, 2008 08:39
> > Bertho,
> >
> > I wouldn't have thought that opto interruptors would be that
> > repeatable. I'm going to run a sheet of paper through a laser
>printer
> > twice and see how well duplicate images register - a rough measure
>of
> > what's easily accomplishable.
> >
> > I just bought a pid controller - going to put it on a hot plate and
> > see what happens. Or maybe an oven? Which is better for smt
>soldering?
> >
> > Mark
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
[Non-text portions of this message have been removed]