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Mon, 9 Nov 1998 14:36:39 -0600 |
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Hi Technetters,
I certainly agree with Rudy. Don Ball has done loads of work and
presented a number of papers along this line. The last phone number I had for
him was (708)238-6427.
He has been a great mentor for me in the past.
Regards,
Les Connally
> From: "<Rudy Sedlak>" <[log in to unmask]>, on 11/8/98 9:51 AM:
> You really ought to contact Don Ball of Atotech, (Formerly Chemcut), to get
> results of his studies on the effects of changing variables on Cupric
> Chloride
> etchant.
>
> Don studied such things as changing the free acid, Copper Content (Baume'),
> and ORP, on such things as etching speed, and etch factor, and has published
> his results in brochures.
>
> He is located in State College PA, do not know the phone number.
>
> Good luck,
>
> Rudy Sedlak
> RD Chemical Company
>
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