this method is the best set of trade offs

esp good pointer is the SAVE-AS

Dennis Saputelli

Ian Wilson wrote:
> 
> On 12:07 AM 3/09/2003, Tim Fifield said:
> >When making a panel is it best to do it in Protel or a gerber tool such as
> >Camtastic?
> >
> >Tim Fifield
> 
> My preferred solution for production boards is to lay up the full panel on
> the board outline layer, including breakoff strips (or v-groove)
> information.  This panel includes outlines for all the individual boards as
> well as any production boarders, tooling holes and break-off holes
> (unplated 0.75mm holes in my case and the only 0.75mm holes in the
> design).  I include dimensions showing the step and repeat.
> 
> Then I lay up the design just in one individual board.  So I have the full
> production panel, but just the one board layed up.  I then get the PCB
> maker to do the step and repeat.
> 
> This gives me control over the production panel, while still allowing me a
> fully editable, synchronisable final design file.  I do not have to muck
> about with separate PCB files for the editable form and the final
> production form (a problem maintaining consistency).  The PCB makers I have
> used to date have been very happy with this.
> 
> Prototype or mixed boards are a different issue - with mixed board panels
> watch out for inconsistent design rules if you are panelising in Protel -
> especially anything to do with layer stackups and and planes.  Remember
> that copying and pasting from one PCB to another does *not* copy the design
> rules - best off using Save-As, at least initially, to create a basis for
> the panel that includes the appropriate manufacturing design rules from one
> of the (hopefully) consistent individual PCB designs.
> 
> Panelising in Protel is a great way to make odd mistakes but can work if
> you keep very switched on.  There are a number of gotchas, but many of us
> do do it.
> 
> Ian

-- 
Dennis Saputelli

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