It works well on brand new, or good condition parts. Once rust or mishandling (or mismatching wheel halves) gets into the game, the term "widowmaker" is pretty appropriate. Once the two pieces of a wheel develop a running fit with each other, putting two pieces together from different wheel assemblies can result in a less than perfect lockup between halves.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!