After selecting a 1/16" double sided 8" X 8"piece of copperclad substrate some prep work needed
to be done. The piece on the left was actually more tarnished than the piece on the right.
An S.O.S pad and little bit of elbow grease and warm water yeilded the clean substrate you see.

BTW this is the best place to purchase copper clad for homebrewing

<http://stores.ebay.com/PCB-Laminates-Copper-Clad>.

He does go on vacation Feb 15th through July 1st