we always make the pad much smaller than the hole for non thru plates
never had any trouble
on the inner layers the DRC uses the hole
on the outer layers we put a fairly large keep out circle
sometimes these are layer specific and different sizes for the screw
head and standoff
Dennis Saputelli
_______________________________________________________________________
Integrated Controls, Inc. Tel: 415-647-0480 EXT 107
2851 21st Street Fax: 415-647-3003
San Francisco, CA 94110 www.integratedcontrolsinc.com
[EMAIL PROTECTED] wrote:
In a message dated 2005-10-24 02:13:56 PM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
Instead, the logical thing to do is place a multi-layer pad, define the
desired hole size, and define all unused pad layers to a diameter of
zero (0) for pad width.
I've found that it's smarter to have the pad size match the hole size. I
don't remember for certain and haven't time to check right now, but I seem to
recall that the DRC works against the pad diameter and not the hole diameter. The
pad will of course be drilled out, but the DRC works correctly that way. In
fact, my recollection is that I've always had trouble if I defined a pad smaller
than the hole size, on any layer.
Steve Hendrix
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