[Rockhounds] vibro laps

[BNMJEFF at aol.com]

So the grit "imbeds" itself in the aluminum to cut the rock?  
Interesting..makes sense. Thanks for the clarification. 
 
 
Jeff  Ursillo
Chain of Events
Unique cabochons
_www.chainofevents.esty.com_ (http://www.chainofevents.esty.com/) 



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