I would recommend TYCOM, specifically Elliot Sura, we have been analyzing
drill bit web thickness with Tycom for over a year. He can be reached at
[log in to unmask]

Dave Rooke
Circo Craft

>
>A potential IPC member writes:
>
>We are particularly interested in determining the web-thickness of an 
>.043" #54 PCB drill bit.  Can you give us the name of an outhority on PCB 
>drill bit geometry or a source where this information is available?
>
>
>Can anyone on the TechNet comment?
>
>Thanks
>__________________________________________________
>
>David W. Bergman, Technical Director
>IPC
>2215 Sanders Road
>Northbrook, IL  60062-6135
>847-509-9700 x340 Phone
>847-509-9798 Fax
>email  [log in to unmask]
>www  http://www.ipc.org
>
>---------------------------------------------------
>
>
>
D. Rooke
([log in to unmask])