Brad,
Thanks very much, I too looked at it that way but when I realized the
step to unlock the primitives of all those parts was involved and
like you say the number of steps and not
being clean I totaly abandoned that idea. Everytime I thought
I had a neat or better way to handle it there was always a few gotcha's.
The silk is my assembly output "as is" plain an simple. Not pretty
but I refuse to take that many steps and the kind of steps
to get a proper top and bottom assembly dwg.
Just thought you might of had a neat trick for this one.
Your right most CAD systems handled this well
many moons ago. Oh well, thanks again though
for the info, I'll just keep it this way till DXP takes
care of it. I'm ready though with that mechanical layer
just in case I do ultimately get to DXP.
So far been able to tell customers that
if you really want a better assembly dwg this is what it
will take and they have agreed with me.
Thanks
Bob Wolfe

----- Original Message -----
From: "Brad Velander" <[EMAIL PROTECTED]>
To: "'Protel EDA Forum'" <[EMAIL PROTECTED]>
Sent: Tuesday, September 10, 2002 3:26 PM
Subject: Re: [PEDA] You can't get there from here (I think)...


> Robert,
> you will see that I indicated that Protel/Altium needs a
> mechanical/assembly layer pairing just as most packages have or have had
for
> many many years. I think that I heard on the DXP forum that this is a
> reality in DXP, no guarantees. Not that I care, DXP is a very distant
glint
> in my eye at the moment.
>
> Using the mechanical layer for assembly on bottom assemblies. It can
> be done, but no, it is not clean or easy and can be loaded with
> possibilities for errors.
>
> With all of your parts placed and the board completed. Assumes that
> you normal mechanical layer is top assembly. Select all the components
that
> were placed on the bottom layer. Unlock the primitives of those selected
> components. Select the unlocked primitives of the mechanical layer (should
> only be the ones for components on the bottom layer). Use a global edit to
> transfer the selected primitives to a bottom mechanical assembly layer.
Use
> a global edit to lock all component primitives again. Done! Do your
assembly
> prints or gerbers with the layer inverted and you will have an as seen
from
> the bottom assembly view. Not too bad but still more cumbersome then we
> should have to deal with in this day and age.
>
> Ooops forgot, if you use the .designator string as we do on the
> assembly layer, you have to mirror the .designator strings when you
transfer
> them to the bottom assembly layer. There is no easy way to do this,
> basically one by one is the only acceptable manner.
>
> PADS did it automagically 6+ years ago, PCAD did it approx. 3 - 4
> years ago in a slightly different manner but it worked. Protel has never
> done it since ver 1.0, what is wrong with this picture?
>
> Sincerely,
> Brad Velander.
>
> Lead PCB Designer
> Norsat International Inc.
> Microwave Products
> Tel   (604) 292-9089 (direct line)
> Fax  (604) 292-9010
> email: [EMAIL PROTECTED]
> http://www.norsat.com
> Norsat's Microwave Products Division has now achieved ISO 9001:2000
> certification
>
>
>
> > -----Original Message-----
> > From: Robert M. Wolfe [mailto:[EMAIL PROTECTED]]
> > Sent: Tuesday, September 10, 2002 12:01 PM
> > To: Protel EDA Forum
> > Subject: Re: [PEDA] You can't get there from here (I think)...
> >
> >
> > Brad,
> > The only problem I still see with this is the fact that this ONE
> > mechanical layer is in fact still one layer and not easily
> > if at all able to be separated out for the bottom assembly view.
> > If there is a way I would love to hear it, I have in fact used
> > a mechanical layer in my library for an assembly layer in
> > hopes of future
> > enhancments from Protel to actually use this layer properly.
> > For now I use as you stated, but there really needs to be an
> > association
> > with two layers for this to work right. If there was a way to change
> > all bottom parts using this machanical layer to another layer
> > that would
> > work but again not clean, this should all happen as soon as you push
> > the part.
> > Bob Wolfe
>
> ************************************************************************
> * Tracking #: CA1E4AE66DC0824ABD750F0592FDE7C79D06CF8E
> *
> ************************************************************************
>
>


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