Re: gEDA-user: random project idea

[Steve Meier <smeier@xxxxxxxxxxxxxxxxxxx>]

My understanding is that the backside of the via hole pattern is filled
with an epoxy which prevents the chimney effect (heat rising through the
via and sucking/wicking the solder down into the via). I think that
should be doable by a hobbyist.

Isn't the switch to rohs soldering a bigger issue?

Steve Meier


On Fri, 2008-03-28 at 15:43 -0400, DJ Delorie wrote:
> > Cheating? I did that board when pcb only
> 
> I meant that hobby folks can rarely afford to have via-in-pad done.
> Unless there's some way to hand-prep each via so the bga can be
> soldered on.  Otherwise, we need to either stick with "normal" rules
> or avoid BGAs altogether.
> 
> > The real issue here separation the hobbyist from the professional is the
> > cost of the components. Boards of this nature are likely to run into the
> > thousands of dollars each for small quantities (pcb fabrication,
> > components and assembly).
> 
> Yup.  I think technology has gotten to the point where the hobbyist
> can make *a* motherboard, but not a leading edge one.



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