I have library parts for mounting holes and other hardware (i.e. all PCB features exist on the schematic).
A consequence of this is that I can define an M3 mounting hole component that includes a keepout definition. This definition is usually a 360 degree arc on the keepout layer with an appropriate clearance to the hole, plus additional keepout arcs on the top and bottom layers (with a larger radius) to keep a sufficiently large zone clear of traces and components so that a lock washer can't do damage. John Haddy > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] > Sent: Thursday, 21 February 2002 10:48 PM > To: Protel EDA Forum > Subject: Re: [PEDA] New Question.. Best Practices... > > > Stephen, > > My line manager has just been to a one day seminar on DFM, and I'll > review the notes next week - so going on a short course might answer > some of your questions. > > When I do 3mm mounting holes, I leave 6mm clear of components. I do this > by temporarly enlarging the pad while routing/placing and shrink when > I'm nearly finished. We had a similar problem here when we accidently > used crinkle washers which shorted our board to chassis. > >[...] > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
