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Subject:	Re: <List>[TN] Sand blasting pcb after copper etching
From:	Steve Hodge <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, Steve Hodge <[log in to unmask]>
Date:	Tue, 6 Sep 2005 07:58:04 -0600
Content-Type:	text/plain
Parts/Attachments:	text/plain (46 lines)

I have not heard of doing this. I have heard of vapor honing for adhesion
promotion for electroless copper.

At 07:34 AM 09/06/2005, you wrote:
>Dear Technetters,
>
>I'm not familiar with the process of making pcb and I would like to
>have your comments on something I was told from a pcb maker
>representative.
>
>"...in order to ensure a well insulation between traces, we do
>sandblasting (very little and tiny) pcb's after etching.
>this is to remove the bonding material that remains on the board after
>removing the copper. This is the only way to achieve a very good SIR
>result."
>
>Is this a normal procedure, was he correct in his claim?
>
>
>Thanks,
>Ivanoe Pedruzzi
>
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