I recently snapped a bolt in my SFN and need to remove it to replace it.
What is the best way to remove it?
Think about it...
I've always knocked them down, either all the way through if your steerer will allow, or just knock it down out of the way of the new one if not. You'll have a job knocking it out the way it came, although it's not impossible, but you'll be hammering for a lot longer.
or do what park suggest and just knock it down a bit and install a new over the top:
http://www.parktool.com/repair/readhowto.asp?id=67
No chance of trying to drill out the rest of the bolt and hopefully just turning it in the threads instead of drilling a hole all the way through
Down will be a lot easier, though some forks steerer tubes narrow at the base so much so that the SFN will be so bent up that it won't work anymore
I'd reckon bash all the way out and stick a new one in (from the top)
i once tried knocking it all teh way through - put a huge crack in the steerer tube. I would serioulsy second Park's suggestion of just knocking it down another inch and putting a new one on top, theya re really cheap and weight nothing. Why risk it.
If your steerer doesn't have a cap at the bottom (as there is with Pikes) you can bang it all the way through. If not then you can bend the "legs" of the star nut in and pull it out from the top.
drill it out...
I just banged them out the direction they went it with a bit of a wooden curtain pole 🙂