"SonomaProducts.com" wrote
This would be best with a CNC router or on a smaller scale what they
call an engraver (craftsman makes\made one), or a laser (which won't
go so deep) or with sand blasting but in that case you need to make
some pattern that will resist the sand, for the others you just need a
computer version of the pattern.

Read product reviews for the craftsman CNC before you buy. If you do, you
probably will not buy. Worst reviews I have ever read for ANY product.
--
Jim in NC