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Countersink Holes and Drill File

PDIENG

I am working on a design that requires plated counter sunk holes in it.  The holes I want counter sunk show in the drill legend, how do I incorporate that information into the drill file so the board house that makes my PCB knows they are counter sunk holes?

Parents

  • We do a simple trick.  Let's say we have an 0.062" hole that's standard and one that's non-standard such as yours.  We use two drill dimensions: 62 and 62.1.  That way each hole has a separate entry in the drill table.  We got this method from the major fabricators who are used to this.  Of course, there needs to be an associated note somewhere on the drawing which mentions the special handling of the "62.1" drill.  And human contact prior to fabrication helps.  I always preview these drawings with my fabricator and make sure we are sync'd up before sending.  In a company that blindly sends out fab data for lowest bidder you might still run into an issue with this method.

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  • We do a simple trick.  Let's say we have an 0.062" hole that's standard and one that's non-standard such as yours.  We use two drill dimensions: 62 and 62.1.  That way each hole has a separate entry in the drill table.  We got this method from the major fabricators who are used to this.  Of course, there needs to be an associated note somewhere on the drawing which mentions the special handling of the "62.1" drill.  And human contact prior to fabrication helps.  I always preview these drawings with my fabricator and make sure we are sync'd up before sending.  In a company that blindly sends out fab data for lowest bidder you might still run into an issue with this method.

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