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· boomerang opeler
5,666 Posts
here is 1 thing you may never think of unless your a blacksmith

shock horror WATER :eek:
heat up the bush to a dull red and then quench it with water
the rapid cooling will break the bond that rust has formed inside the bush and you should be able to punch it out

all those years when we thought water is our enemy and it turns out to be a friend :D

i have done this on lots of frozen bolts and it works a treat

any high strenth bolt should be replaced after heating as it changes its metalergical properties when quenched
mild steel is not effected to any real extent as you can not temper it
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