>
>Lay out a dummy board in any Electronic CAD ap, without specifying the
>full schematic. In other words, draw a schematic with no connections,
>capture it with your CAD ap, and either lay it out with spacings that you
>feel comfortable with from experience, or do a rough placement and use a
>board density check

In this case, I already have the full schematic captured.
I am going to change some parts over from 1206 to 804, and some other parts
are going to change from DIP to SMD.

My cadware has no density check, other than to let the autorouter run, and
see what sort of a mess it makes.

>I guess the other possible answers are: Ater you have done too many board
>designs, you'll be able to guess right almost every time - so just
>practice, practice, practice. Also; Draw your desired board outline first
>and just MAKE everything fit inside it. But I wouldn't give these last two
>as legitimate replies...
>Chris

I don't do that many boards, unfortunately. Maybe 1-2 per year for
production. So I may never really get there.

I'm afraid in this case, I may just be in the last category.

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