Point taken, I didn't consider that. Of course, it would still be easier
    to dispose of than etchant. Unless you just pour it down the drain :)

You should look into re-usable etchant.  I got the CuCl etchant described
here: http://www.dnai.com/~rexa/Projects/CuCl_ech.html to disolve copper
just fine, although I don't know how compatible it is with typical hobbyist
(or professional) resists (ie I etched away a whole side worth of copper,
but didn't try to do a real PCB.)

BillW

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