Yo;
-I was a machinist many moons ago. Breaking off an easy-out usually
happens when a too-samll drill is used, or the hole is drilled off
center. Then, when the easy-out is turned to twist out the screw, it
also snaps off. The drill bit used should be the EXACT diameter of the
bolt/stud shaft itself. 9 times out of 10, if the right size drill bit
is used, and drilled on-center, (use a center punch) I've had the bolt
"threads" come right out attached to the drill bit, and the bolt hole
just needs a minor chasing with a tap.
-It is very understandable that easy-outs get snapped off, especially
when access to a real straight-in drill-out is hard, like on an
exhaust manifold while the engine is in the car. Seen many of these,
in fact. Wheels studs, axle studs, too. Mostly higher-grade hardware
that's exposed to the environment are the ones most likely to break.
Then you have a real HARD alloy, busted, easy-out to contend with.
Phil
______________________________ Reply Separator _________________________________
Subject: Re: Broken Stud...
Author: Roland Dudley <cobra@cdc.hp.com> at ~INTERNET
Date: 3/21/97 9:46 AM
> Jim Parent wrote:
> >
> > There is a tool called an "easy-out" that is used by center drilling the
> > busted bolt/stud with an hole that is appropriate for the easy-ouot to bite
> > into. (they come is various sizes).
> >
> >
> In 25 years of working on cars, I've never had an "easy out work" !
> Usually, they snap off, costing even more money to remove!
Ditto, except a lot more than 25 years of trying.
Roland
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