Copper foil for stained glass comes in various widths, backing colors and shapes.
Mostly available in 1 ml to 1.5 ml thickness with adhesive backing in 6" rolls.
Never use copper foil on steel reinforcement. Electrolysis will
deteriorate the copper in short time and cause failure. Always use lead
on steel or copper on brass.
Pro Tip: Whatever
technique used to apply copper foil, keep foil clean and cover project
if to be left out for extended periods of time to limit oxidation of
copper. Avoid excessive handling of foil to limit oil from skin
deterioration. Standard duct tape applied to finger tips in thin
workable strips aid in crimping, minimal deterioration of copper and
scarring of finger tips from sharp foil.
Myth: Thinner copper foil is all you need to use and is easier on the finger tips. Fact: The latter half of this statement is true but surely is not a reasonable
compromise where a heavier stable foil is needed.
When choosing the thickness of foil consider the structural needs of
the finished project. Considerable weakness is noticed on larger
projects and lamps using thinner gauge foil.