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Back Drilling

stump1019

Just wondering how other people are handling some of the shortcomings in the Allegro tool regarding back drilling. One of the things missing in the tool is the ability to define somewhere the diameter of the back drill. When running ncdrill to create the drill table for the back drill the diameter that shows is the diameter of the primary hole or the plated hole that will remain after the back drilling process. You need to manually manipulate the drill chart within allegro in order to change the diameter. You should also be able to specify the back drill as a non-plated entity. The whole idea behind a back drill is to wipe out the plated area with no copper remaining. There should be some type of property for a back drill diameter or an area in the padstack editor to define a back drill diameter. Interested to see how others think.

 

  • FormerMember
    FormerMember

    Check out the document:

    Best Practices: Working with Backdrilling

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