Howdy,

Add a cut-out to the drawing across one of the holes.  Place the same call out, in the 
case below "A" or "A-A", next to your drill legend and use the callout to label a 
dimensioned drawing of a cross-section of the countersunk hole.
As for the clearance around the hole, I prefer not to micromanage and place the 
largest clearance for all layers.

 - - - - -    <or>   - - A - -
 |       |           |       |
 \/     \/           \/     \/
 A       A                    

Cheers!
Drew


----- Original Message ----- 
From: "Sean James" <[EMAIL PROTECTED]>
To: "Protel EDA Forum" <[EMAIL PROTECTED]>
Sent: Friday, February 08, 2002 12:07 PM
Subject: [PEDA] Countersunk holes


Could somebody please send me a dxf, bmp, etc. of how to call out a c'sunk hole on a 
drill drawing; Also, how much clearance to allow around the hole.


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