i would wonder why you need targets at all. if they have any C.A.D. capability
at all, most systems can automatically align layers with the click of the mouse.
if it is being sent out to be plotted as single films, that usually means they 
are hand stepping the artwork to a drilled panel. if they are sending out 
stepped up artwork, that is not unusual, some shops still rely on outside 
plotting services. my last question would be concerning how they factor in for 
the controlled impedance.

as others have said, you get what you pay for, not to disparage on the low tech 
shops ( most of us have been there ) but most shops today work with all sorts of
up front C.A.D. / C.A.M. systems. 


______________________________ Reply Separator _________________________________
Subject: Targets and Film
Author:  Jespersen at ELECTROPAC
Date:    7/28/97 7:28 AM


Trivial question, but to the fabricators out there: 
What percentage of your customers faithfully supply 
targets on the Gerber data?
Do you even use targets for alignment or measuring?
     
Also, for anyone who cares to comment:
At my new company we are using vendors who can't 
plot their own film, and we have to modem the data 
over to a photoplotting vendor. This implies that
NO up-front engineering type CAM work is being done, 
and most of these boards are impedance controlled
RF designs. Am I confused in thinking maybe we should 
look for more modernized vendors, or did I just get 
spoiled by cream-of-the-crop high-tech excellence? 
(Also, its probably worth noting that the previous 
employer's concern was high-quality prototypes FAST 
TURN no matter the cost. Whereas here, money is a big 
issue and these low-tech places are CHEAP!) 
     
Not trying to start any wars here, but I'm curious 
how many vendors these days just work from someone 
else's film?
     
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