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Posted by Joe on June 24, 2007, 11:27 pm
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>
>
>
> > On Jun 23, 8:22 am, trad...@optonline.net wrote:
> >> On Jun 22, 10:45 pm, t...@mucks.net wrote:
>
> >> > On Fri, 22 Jun 2007 23:41:30 -0400, t...@mucks.net wrote:
> >> > >It is most important that keep the drill centered. Guide the drill at
> >> > >an angle until you get hole in the right location and then slowly
> >> > >straighten the drill. Do not break the drill. Drill the screw all the
> >> > >way through.
>
> >> > >If you think loctite may have been used then heat the area until smoke
> >> > >shows the loctite burning.
>
> >> > >When cool insert the extractor and tap downward to make the tool grab.
> >> > >This should remove it if you kept the drill centered.
>
> >> > >If not drill the hole through with a root diameter drill as long as
> >> > >you can keep it centered. If you can Re-Tap.
>
> >> > >If this still fails then purchase a thread insert and follow the
> >> > >directions.
>
> >> > Best thread insert : Gardserts
>
> >> >http://www.gardspecialists.com/-Hidequoted text -
>
> >> > - Show quoted text -
>
> >> I've can't imagine how you could use a screw extractor on a 10-32
> >> screw to begin with. I've never seen one that's small enough to be
> >> used on a screw that small.
>
> > I've used screw extractors on screws as small as #6's.....but its
> > usually a 50-50 success rate even on the bigger ones.
>
> > IMO you need good quality extractors...I have a set of Hanson's that
> > has extractors for even smaller screws.
>
> >http://www.mytoolstore.com/hanson/extractr.html
>
> > The trick is to drill down the centerline of the screw, drill the
> > right size hole......too big & the screw extractor tends to expand the
> > screw & lock in the hole....too small & you won't get a good bite on
> > the screw
>
> > a brass screw is pretty soft so the extractor might chew it up rather
> > than bite & extract.
>
> > MC, if you've got through hole you might be able to drill with
> > successively bigger drill until on the threads of the screw are left &
> > then you can pick at the screw & maybe unwind the thread.
>
> > If the hole's not too badly messed up you might be able to chase the
> > threads & re-use the hole as is...otherwise bump up to the next size
> > (#12) or do a hole repair with a Heli-coil
>
> > cheers
> > Bob
>
> Thanks Bob. I have drilled it all the way through and inserted the screw
> extractor and no good it won't bite. I then took a dremel with a cut off
> wheel to cut a deeper slot and tried again - it turned ... but bad news, the
> screw head came off and the rest of the screw is still inside the hole and
> none of it is protruding from the hole for me to get with a plier.
>
> So now I have a short screw inside the hole, I guess I need to use a bigger
> drill bit but I think more than likely I will damage the thread of the hole
> since I don't trust myself to be able to drill totally straight and
> centered. I have about 7 screws that are refusing to be extracted out of
> 16.
>
> MC
Did you read my earlier post? I know from years doing mechanical work
that stubborn screws can be easily removed with an IMPACT DRIVER (not
an air impact wrench). This is a simple tool that works with another
simple tool, a hammer. Nearly 99% of professional mechanics will have
one in their toolbox, but the general public and every one of your
post responders seems to be blissfully unaware of this essential and
low cost device. For under $10 you can likely solve your problem, $15
if you need a hammer, and if it doesn't work due to corrosion or some
other mechanical mishap you can then do a drill out and Helicoil
routine knowing that the situation was hopeless to begin with. Good
luck.
Joe
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