On Sat, 24 May 2008 15:49:09 -0700 in rec.crafts.metalworking, "Dave
August" wrote,
FLATTENED can's and lids came on pallets. One "job station" was running the
"can expander", It "un-flattened" them, rolled on a bottom, and sent them
ratteling on down the line to be filled.

Did they have a crease where they were flattened?