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RE: Blasting Sand



BK writes:
>It is also considered better to use gravel of 1/16-3/32 inch diameter.

George Booth wrote in response:
>No, no, it is much better to use gravel of 2-3mm diameter.  That's what Dupla
sez.


The last time I checked, there were 25.4 millimeters per inch.  Two
millimeters is approximately .0787 inches or roughly 1/16th (.0625) of an
inch.  Three millimeters is approximately .1181 inches or roughly 3/32nds
(.09375) of an inch.  Is the difference between .0787 and .0625 and between
.1181 and .09375 that critical?  Would it make a difference if the gravel was
of 1/16 to 1/8th (.1250) of an inch rather than 1/16th to 3/32nds?  

George, are you trying to be humorous or do we need to use a micrometer on our
gravel?  Inquiring minds want to know.

Roger Gordon
San Diego