Expert: lyn buerger - 6/7/2009

Question
what is the best size of copper foil to use when foiling a bevel for a small octagon window? 7/32 or 3/16

Answer
This one is personal choice.  I would probably use the 7/32 simply because I don't have the 3/16 in stock and only if the window was small. However, there is almost no difference between the two sizes.  You also have a choice of copper foil backing, plain, silver and black. So consider if you are going to use a patina and choose accordingly.

But remember that the only thing hold the panel together is the solder bead. So if the window was larger then I would go to the 1/4 width for the extra strength.  You can also brace the piece internally by using some copper coated steel re-enforcement ribbon.  

Some people like the looks of the thin, thin, solder seam, but all I see if a weak piece of glass and I will probably have it in-shop to repair when it begins to fall apart.