Homebrew PCBs

of what 
> you can do much of by hand.  1200 may be a little sharper etc, but a
bit of 
> overkill for just homemade PCBs.
> 
> Alan
I guess it depends on what kind of board you are trying to make.
I just made a two sided circuit board with a flash chip and Sharp
LH79520. The LH79520 is an LQFP176 with .4 mm spacing. The distance
between the pins is .15 mm or about 6mil. This was a challenging board
to make. Even with 1200dpi there was some time spent with the
microscope fixing defects. I do not think it I could have done it with
a 600 dpi printer.