[sdiy] My PCB positives are see through!

[Jeff Farr]

I guess it's possible that this isn't a big deal, but I just got my
prints back on transparancies for etching a few boards and, despite
having them done at high quality, I can see right through the ground
plane when I hold it up to any light.  The traces themselves look alot
better, but I'm still a bit un-nerved about this.  I called the
printers and they've assured me this is normal for anything that uses
toner and the only real option for better quality is to use a press
(big money).  I'd rather not try to stack multiple copies on top of
one another (even with 3 I can still see through them a bit) as
aligning them will be a pain.  Comments?