Homebrew PCBs

> iwasalreadythere wrote:
>
> I'm sure this is a fairly basic question, but
> I was given a PCB layout to etch that is about
> 3" tall and 4.25" wide.  I've just found out 
> that I need the PCB to fit into a 4" x 4"
> space.
> <SNIP>

4.25" / 4" = about 7% smaller.

As long as there are no quad sided surface mount
ICs and that any DIP ICs run perpendicular to
the long edge - then just scale the current PCB
to 3" x 4"

All 2 legged components wont care about the pads
being 7% closer together.  DIP ICs wont care
about the sides being 7% closer. (7% shorted
between pins will add up thought so if they run
that way you will have to redraw it.)