I am in the middle of a discussion/debate with assemblers on one side and
designers on the other.
 
The question is:
What would your shop prefer to receive from the designer for soldermask features?
 
either 
A) 1:1?  (Soldermask clearance same as the holesize, padsize, surfacemount, or
              clearanced feature size)
or
B) Soldermask Clearance set at some value over the pad/feature/SMT size?
    (Like 3 mils per side)
 
Thanks for any and all responses,
 
David Hoover
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