[sdiy] JH goes PCB - Copper ring size for PCBs?

Colin f colin at colinfraser.com
Thu May 17 14:21:11 CEST 2007

> A couple of things:
> Normally manufacturers assume the size you specify is the 
> finished hole 
> size, not the actual drill size.

Olimex are not normal.
I've had holes that were reduced by more than 0.1mm over the hole size too -
doesn't seem to be a very good process they use.
Cheap though...

Colin f

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