Re doing it w/ Gerbers...   I haven't watched this whole (hole ;) )  thread,
so I hope I am not being redundant.  Anyway,  You can quickly mirror the
bottom layer in CAMTASTIC.  I have never bothered to print from CAMTASTIC,
but it looks to be capable.  I will be printing the mirrored layer Monday or
Tuesday, and will follow up w/ its sucess.  Creating the mirror took about 3


-----Original Message-----
From: Ian Wilson [mailto:[EMAIL PROTECTED]]
Sent: Friday, February 22, 2002 6:03 PM
To: Protel EDA Forum
Subject: Re: [PEDA] PCB view from bottom of board??

On 07:01 PM 22/02/2002 +1100, Geoff Harland said:
>Bottom line: if Altium have visions of providing an "inverting" feature in
>Phoenix, then this should be provided in a form which inverts the *entire*
>PCB; there should not be an additional option (or alternative
>implementation) of inverting *just* selected items.
>It is debatable as to what *should* happen when the L key is pressed, but
>attempting to implement an "inversion" of objects which are currently in a
>selected state (and *just* those objects) does have the potential to
>nasty results. Does anyone else have any thoughts on this matter?
>Geoff Harland.

I usually don't want to invert the board as an end to itself - I just want
to sometimes be able to work from the bottom - so just a viewpoint thing
not a database thing would serve most of my purposes. An invert maybe
useful when laying up SM components both side on a panel and using the
"alternate rows flipped" technique of minimising pick and place machine
setup.  But doing this with Gerbers instead of the PCB is possible of

Also, Abd ul-Rahman's comments about design re-use are valid.  Hmmm - maybe
it is time to re-visit the invert server... I think if we made the
compromise that it only dealt with visible entities (so did not try to play
games with layer pairs, design rules etc), only affected Top and Bottom
Layer entities and  associated layers, did not support undo (this was a big
cause of problems) then we could release something that makes a good fist
of typical inversion requirements - the existing beta server would be cut
back to achieve this.  Any interest in a cut down server that did not try
to fully invert the whole database but just the top and bottom layers?

And I personally would not be doing anything on this until I saw what
Phoenix had - since we have requested bottom-viewing, inversion and mech
layer associativity (all these being somewhat related) it would not
surprise me to see that there was not something there in the next version -
they are, after all, nice marketable features.

Ian Wilson

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