Look in the sites suggested above. However if you are looking for electropolishing a very large vessel in stainless steel for using as vacuum chamber for avoiding de-gassing. Then fill the vessel with the electrolyte and make it positive. The negative electrode can be insulated like a feed through and inserted through a connection designed for it.
kiran nawathe
__________________
if you are a managment professional or youth who wants to start business contact for free help for your project including financial assistance through NGO in and around Pune India