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. _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
