John,

  You can use a standard foil with a hole ( like a stencil ) and use the
marker to paint.

Thanks

> -----Original Message-----
> From: John Chandler [SMTP:[log in to unmask]]
> Sent: 26 de Maio de 1999 03:05
> To:   [log in to unmask]
> Subject:      [TN] Reflow/water resistant sticker dots
>
> We as you all have X'ed out boards which run through our lines.
> Our machinery will recognize a white or bright yellow dot as a bad board
> and automatically skip that offset in the programs.
>
> Paper dots go through the reflow just fine but in the water wash they fall
> apart and would clog up the wash after a period of time.
>
> We can use a white marker which is permanent and hand draw a dot on every
> board but now the problem is as human beings go. Some make big dots and
> some put specks on which the machines may or may not recognize.
>
> Any suggestions?????
>
> Thanks
>
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