Brad:
Yes, I used both multilayer lines and arcs but I changed them all to my
mechanical layer 4 and then no more problems so I am not sure exactly if it
was just the arcs or both the arcs and lines.

Regards,
Gary Allbee
Alta Industrial Automation Ltd
www.aialtd.com
> Gary,
> I don't use the autorouter at all but I have to ask about your
> multilayer lines. Were any segments of these lines actually arcs? Like at
> the ends of your slot? The Protel autorouter does not like arcs, I don't
> know the exact connotation of that statement but on numerous occasions the
> comment has been raised by those that do use the autorouter. Commonly it
is
> in regards to the board outline (possibly that's on the keepout layer).
>
> Brad Velander,
> Lead PCB Designer,
> Norsat International Inc.,
> #300 - 4401 Still Creek Dr.,
> Burnaby, B.C., V5C 6G9.
> Tel. (604) 292-9089 direct
> Fax (604) 292-9010
> website www.norsat.com
>
>
> > -----Original Message-----
> > From: G. Allbee [mailto:[EMAIL PROTECTED]]
> > Sent: Tuesday, September 11, 2001 7:47 PM
> > To: Protel EDA Forum
> > Subject: Re: [PEDA] Autorouting Problems
> > FYI
> > I worked on it all day and finally found the problem.(1 day late on
> > delivery)
> >
> > In this revision of the board I added a slot in the middle of
> > the board.  I
> > remembered an email from this group some time ago that said
> > something like
> > put a through hole on each end of the slot and then draw lines on the
> > perimeter of the slot.  So this is what I did, however I used lines on
> > multilayer figuring they would also work as keepouts and
> > prevent routing in
> > the slot.
> >
> > I discovered that the multilayer lines were preventing the
> > autorouter from
> > routing and when changed to a mechanical layer the router
> > would work like
> > normal..  Hmmm - a bug?
> >
> > Regards,
> > Gary Allbee
>

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