Got another one for you. If you work in IN and do .8 and 1.0mm, simply
fanout the footprint symbol (and if your CAD tool is good enough, you can
even have ALTERNATE footprints... )in your library. You can have multiple
footprints per part. Then, simply route GRIDLESS! You learn to do that,
and things are easy too. Units won't matter.

As has been mentioned before, the world IS NOT metric. The government was
pushing the conversion back in 1965! Have we learned and implemented? No,
not so far. Do I do metric? I have, but then I've had to deal with INCH
based engineers, INCH based managers, INCH based fabricators, etc. etc.
You do the math.

Good conversation though.

Good day.

Mitch

>
> Metric is the way to go, especially if you are using 1mm pitch BGA, or
> .8mm, easiest way to route is using metric, since most of today's
> electrical components are now metric.I you like making your job more
> complicated, I guess Inches will do that for you.
> My approach is as follows, if the majority of the components on the
> board I'm working on are metric, then so is my design.
>
>
> Inkra Networks
> Patrick Jabbaz CID



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