Originally Posted by
BCRider
Excactly what S&S said. Etching the metal away isn't a valid method for making a frame lighter...
I definitely remember reading about etching being used to create butted tubing....
Dip ends of tube in wax, allow to cool, then submerge for a defined time in something nasty. Remove, rinse and heat tube to get rid of wax. Repeat with less of a dip for double butted tubing.