1.   Then aluminum foil was used to keep a potato warm, and finally foil was used to wrap the potato before it went into the oven.

2.   Use aluminum foil to keep water from getting inside gas orifices.

3.   Using foil as aid, lift out of pan and place on a work surface.

4.   Woods could use a foil.

5.   Copper foil is used primarily in making mother boards for computers and other electronic applications.