"Lone Gunner" wrote in message ...
The majority of them can be drilled though....All it takes is a post
to state what size and brand name tank they intend topdrill and its
easy to reply with the yes or no its not doable on that tank....Even
the manufacturers have online references as to their being tempered or
not. Its certianly not a black art.

I am not saying it is black art...
The problem is that the majority of tanks on the market are made
of tempered glass on the bottom. So drilling is out of question.