I just wanted to thank the people who decided to spend some time in
writing to me.
I appreciated it a lot and I could understand more on what the local
manufacturer was trying to sell us as a value added activity.

Thanks, Ivan


Il giorno 07/set/05, alle ore 03:59, Wolfgang E. Erat ha scritto:

> Hi, sounds to me like the old jet pumice scrubbing, and yes, by
> some stretch
> you can picture this a sandblasting. Not sure how widely used this
> is these
> days but it sure does a good job.
>
> Wolfgang
>
> ----- Original Message -----
> From: "Ivanoe Pedruzzi" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, September 06, 2005 9:34 AM
> Subject: [TN] Sand blasting pcb after copper etching
>
>
>
>> 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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