I am involved with an improved outerlayer registration method and am trying 
to:

a) Correlate improved performance data that I have collected with the 
theoretical accuracy limits.
b) Understand and quantify the tangible customer benefits of improved annular 
ring tolerance.

I would appreciate any assistance to obtain the following information:

1) The typical distribution of drilling error.

2) Drill positional error (wander) as a function of the drill diameter.

3) Drill positional error (wander) as a function of stack height.

4) Drill life as a function of drill diameter.

5) Drilling tolerances that you experience.

6) Answers to any questions that an imaging person didn't think to ask about 
drilling.

Of additional interest would be a function or spreadsheet that would model 
drilling performance.

Thank you in advance:
	Bert Ohlig
	OLEC Corporation
	[log in to unmask]
	714 930 2500
	714 930 2506 Fax

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