Originally Posted by BostonFixed
I have used a 10# short sledge hammer on the cups, a rubber mallet, a block of wood supporting the cups with a 5# hammer driving the cups in, and a cheezy romance novel protecting the cups when I bang on them with a BFH. (big f-ucking hammer)
Never install anything on a bike with a hammer and never, never shake a baby.
If you insist on doing this yourself use a threaded rod, two large washers and two nuts.
Install one cup at a time.
Good luck