Selecting The Right Foil To begin you will need to determine what size and type of copper foil you will be using. Foil is available in a variety of widths ranging from 5/32" to 1/2". The most common width is 7/32", but you may find 1/4" width a little easier to wrap around your glass pieces as centering the glass on 1/4" foil is less critical...
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