Don't think they sell the material but if you contact Harry at prime on 510 490 2299 he can black top them
 They take care of all our marking and remarking requirements 

bob wettermann <[log in to unmask]> wrote:

> Dear Technetters:
>Does anyone know of a vendor of "black top" to
>fill in voids left by laser "X-out" patterns in the top of an epoxy
>(plastic) package ?
>We are demarking an area of a device and would like to fill it in  with something other than a colored epoxy (too long to cure, cures with glossy finish).
>Regards
>
>Bob Wettermann
>BEST Inc
>
>
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