In this improved tutorial, I am showing how to wrap copper foil around glass pieces evenly.

I am using 3/16" black-backed foil from Ed Hoy's International. Venture makes a good brand as well.
I recommend using 3/16" for most stained glass brands. Thicker foil leads to wide solder seams, using more solder than necessary. If you are 1. making larger 3D items, like lampshades, OR have glass thicker than 1/8" move up to 7/32." 1/4" foil is waaaaay too wide, in my opinion.

**Disclaimer: Some links may be affiliate links which help support me to create content, however, I only promote products I use and truly like, and all opinions are my own.**

Edco 3/16" black-backed copper foil: https://amzn.to/3jeDwsc
Venture (3M) brand 3/16" black-backed copper foil: https://amzn.to/34sTKd3

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Glueing Pattern Pieces with Rubber Cement:    • Video  
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Washing off and Numbering Pieces:    • Washing off and Numbering Glass Patte...  
Foiling Glass Pattern Pieces:    • Copper Foiling Glass Pieces for Stain...