Etching PCB boards
I know that copper is a better conductor than tin or aluminum. But one of my friends a few days ago told me that instead of etching his layout on copper, he used the bottom of an altoids tin. he said all he did was sand the bottom until there was no paint of the altoids can and then he etched his layout. (Chemical bath, toner, etc.)
So my question is, Does anyone know how to etch custom layouts (toner layouts) on tin or aluminum?
**I figure this could save people some money and time on some projects. :)