Homebrew PCBs

please help me understand why 600 is so good.  I'm not disputing it, 
mind you but it seems kind of at the edge.  If I am doing the math 
correctly, a 10 mil trace on a 600 DPI device is 6 dots wide.  8 mil 
is less than 5 dots.  That seems kind of tight to me but maybe its 
ok.  With my ink jet (1440 dpi) and copier (not sure what its 
effective DPI is but its pretty high), I get really clean traces even 
at 8 mil. I can get them to transfer but am fighting smearing which I 
believe to be due to poor temperature control.  



--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan 
<stefan_trethan@g...> wrote:
> 
> >    And would likely be better off to still just sell the drum 
from the 
> > 1200 DPI
> > and buy two LJ 6L's or similar anyway.  The 600 DPI approaches 
the limit 
> > 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 think 600dpi is sufficient...
> 
> st