A good place to start is Multiline Technology, Michael Angelo the president 
is an expert on post etch punching and manufactures systems to do this.  He 
has published many times on the subject.  He is at 516-249-8300, 
400Broadhollow Road Farmington NY 11735.  When we had a board fabrication 
shop we used post etch punching with success.
From:
[log in to unmask]

 ----------
From: [log in to unmask]
To: [log in to unmask]
Subject: gen:Post-Etch-Punch and Optical Post Lamination (Optimizer)
Date: Tuesday, April 09, 1996 3:55PM

Address,

Several years ago I worked indirectly with Post-Etch-Punch and Optimizer 
Units (a.k.a. Optical Post Lamination).  However, I am not able to find the 
Technical Information or articles on the
principles, advantages, disadvantages, etc on these equipment.Does anyone 
readily have information on the above equipment.Thank you in advance.
John Gulley - PE
email: [log in to unmask]
wk:214-340-0543