On 03:29 PM 8/11/2001 -0500, Robison Michael R CNIN said:
>hello,
>
>my questions:
>
>1.  the dark green i'm seeing represents the "negative", or holes, in the
>power plane, correct?

Correct


>2.  after simply drawing the keepoutlayer back in, i am not seeing the
>dark green power plane void outside the keepoutlayer.  does this mean
>that i still have the power plane running right to the board edge?

Keepout does not affect planes.


>3.  without a keepoutlayer do the planes extend right to the board edge?

With or without the keepout - Yes, planes extend to the edge.


>4.  how do i recess the power and ground planes back in a few mils on
>this board?

Use tracks on the plane layer.  The simplest method is to use select all 
the board outline tracks and the use the Paste Special to paste onto the 
current layer, changing the layer to each of the plane layers and 
pasting.  Then de-select all the tracks on the board outline layer, leaving 
only the tracks on the plane layers selected, and then globally change the 
selected track widths to double your backoff - so a 50 mil track gives a 25 
mil backoff. You can go a bit higher but usually not necessary.


>5.  can i visibly see the planes recessed back from the card edge in protel
>or do i need to generate gerbers and use camtastic to do that?

Yes see point 4)

Ian Wilson

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