and size of the granule. i get different effects on my glass depending upon
size and hardness of blasting material, and air pressure.

regards,
charlie
http://glassartists.org/chaniarts

"Bob May" wrote in message
...
Basically hardness of the media equates to agressivnessness of the
blasting.

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Why do penguins walk so far to get to their nesting grounds?