how do u put a crown race on a fork?

or if you dont use a pipe you can just find a vice and put it between 2 blocks of woods or a skateboard or pretty much anything, slide it on put a screw driver on a lip and smash the screw driver with anything and keep going all around the lip till the whole circle is on
 
deff need one a friend of mine didnt use one and the lip spacer thing got so f*cked it was almost unrideable. use a hammer and a flat head or do wat mark said for sure works
 
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