Homebrew PCBs

I have done some etching of small brass and copper/bronze parts in the 
past, although not etching of PCB's, however this etchant/etching 
discussion has me curious... has anyone tried placing a sonicair (type) 
electronic toothbrush (extension, without bristles) into an etchant 
bath for agitation? Just thinking it might make a simple, but 
interesting experiment...
Roger


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