Tim,
One of my major complaints about Protel is its lack
of assembly layer capability, there should be 2 other
layers call them mechanical or whatever that automatically
mirror AND change to a designated other layer when
that part is pushed to bottom or top. The Top & Bottom Overlay layers do
this however there are many times and situations where I want an exact image
of the part
but would not want all of that in silkscreen. One good
example is connectors that hang over edge of board, why provide silkscreen
data that clearly will go off edge of
board. Also there may be a little more detail required
in an assembly view you would not want on silkscreen.
There is no clean way I've seen in 99SE to handle
this. Not sure I'd call it dangerous, but I just do not
like putting the kind of detail into a silkscreen layer
that could potentially end up on pads. Yes I know
the fab vendor can do this but why put too many places
on a design that this has to be done.
Bob Wolfe.

----- Original Message -----
From: "Tim Fifield" <[EMAIL PROTECTED]>
To: "Protel EDA Forum" <[EMAIL PROTECTED]>
Sent: Tuesday, September 10, 2002 8:33 AM
Subject: Re: [PEDA] You can't get there from here (I think)...


> Joe,
>
> Please explain why this sounds dangerous? What do you put on your
mechanical
> layer that is not contained on the silk screen?
>
> Tim
>
> -----Original Message-----
> From: Joe Sapienza [mailto:[EMAIL PROTECTED]]
> Sent: Monday, September 09, 2002 4:33 PM
> To: Protel EDA Forum
> Subject: Re: [PEDA] You can't get there from here (I think)...
>
>
> Tim,
> It sounds as if you intend to use the silkscreen layer for the assembly
> info? A dangerous practice and extra work. Usually do all this stuff on a
> separate mechanical layer. Then go the PDF route.
> Joe
>
>
> ----- Original Message -----
> From: "Tim Fifield" <[EMAIL PROTECTED]>
> To: "Protel EDA Forum" <[EMAIL PROTECTED]>
> Sent: Monday, September 09, 2002 3:08 PM
> Subject: Re: [PEDA] You can't get there from here (I think)...
>
>
> > Richard,
> >
> > What I do is make a copy of the .ddb file (renaming it appropriately)
and
> > create the assembly drawing from it. I delete all but the .pcb and print
> > preview files.
> > Then I auto position all ref des to center (with correct rotation).
> > In the print preview I use top and bottom overlays with the mechanical
> > outline and title block. I set it up on an 11x17 and create a .pdf file.
> >
> > I find this is quite neat and clear when assembling as the ref des are
> > inside the component outline.
> >
> > Tim
> >
> >
> > ************************************************************************
> > * Tracking #: 524F310DD953EB41BC284D893FB206FADF1F2123
> > *
> > ************************************************************************
> >
>
>


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