Brake bleed screw/UFO calipers.

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <34a8d1a0.9278164@post3.tele.dk> allan.olesen@post3.tele.dk (Olesen, Allan) writes:

> >--- TU(e)V, don't ya' know.  I haven't been able to find a broken
> >screw/stud removal tool  -- but I haven't looked very hard.  Are these
> >things effective?  Do they create much in the way of metal shavings?
> 
> Yes, there is a tool. I do not know the english word for it (the
> Danish word is "ornepik", referring to a specific part of the male pig
> anatomy). However, the tool has a conical male left hand thread, so
> you can drill a hole in the bolt, screw the tool counterclockwise into
> the hole, and unscrew the bolt.

I think the US brand name is "EasyOut" or some such.  Yanks tend to pronounce 
"Z" as 'zee', so it might be "E-Z-Out" or some abberation like that.
 
It's a good idea to pull the screw from the other caliper so that you know the 
dimensions of what you're dealing with.  I also like to run a small drill right 
in, then a larger one not quite as far, and then an even larger one just at the 
top.  This creates a stepped hole with several edges for the extractor to grip.
 
Unfortunately, on a small brass screw it's best done on a bench.

-- 
 Phil Payne
 Committee Member, UK Audi [ur-]quattro Owners Club