A recent increase in wedge voiding has prompted an investigation into 
     the possible causes of this defect.
     
     If anyone is experiencing this defect, (wedge voiding and/or "pink 
     ring") OR you DO NOT have a problem with it , I would appreciate any 
     information that you could supply pertaining to the following:
     
     -Hole size defect found in and aspect ratio
     -Drill supplier
     -Core material supplier
     -Prepreg supplier
     -Oxide parameters and chemistry
     
     
     Thank you in advance for your help.

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