Mipi,

The aluminum I used is a tape with adhesive already on it. It is used by Heating & Air Conditioning installers to seal ductwork. Their pet name for it is liquid ducting because it molds to almost any shape and stays put.

This is the real Duct Tape. You can find it in your hardware store.

I simply cut off a small piece, placed it on the carved design and pressed it into place first with my fingernail and then with a matchstick. I used an old trick from metal shop and rubbed the matchstick on a candle to wax it and then burnished the metal into shape polishing as I went.

No, it won't last forever. No, it's not a permanent thing or meant to be sold. I just wanted to dress up the plastic handle I was using.