[Test-Equipment] Difficult Allen Screws

[wolfbob]

When you break off the extractor and can't get a hold of it to get it out of
the hole (It is barely in there if you can turn it backwards) then you go to
the hollow drill and drill out the entire screw, extractor and the threads
they are stuck in and  tap it for the next size. In the case of knobs with
an insert, you get a new knob or thread the plastic.

WBob


----- Original Message ----- 
From: "Jerry Kincade" <w5kp at direcway.com>
To: "John" <jmort at global.freeserve.co.uk>; <test-equipment at mailman.qth.net>
Sent: Wednesday, July 14, 2004 9:57 AM
Subject: Re: [Test-Equipment] Difficult Allen Screws


> I don't know if they do, but I'm not a big fan of easy-outs anyway, having
> broken off one or two in engine blocks in my time. Then you have REAL
> trouble. Those things must be just below diamonds on the Rockwell scale.
:-)
> Jerry W5KP
>
> ----- Original Message ----- 
> From: "John" <jmort at global.freeserve.co.uk>
> To: <test-equipment at mailman.qth.net>
> Sent: Wednesday, July 14, 2004 1:56 AM
> Subject: [Test-Equipment] Difficult Allen Screws
>
>
> > Do they sell small sized extractors that would be suitable for the small
> > grub screws used in typical ham control knobs?  I have only seen the
> > larger sized extractors 1/8" and up.
> >
> > Thanks
> >
> > > ----- Original Message -----
> > > From: "wolfbob" <wolfbob at csnsys.com>
> > > To: <test-equipment at mailman.qth.net>; "Dr M J DiGirolamo"
<DrD at 2020.com>
> > > Sent: 14 July 2004 06:44
> > > Subject: Re: [Test-Equipment] Difficult Allen Screws
> > >
> > >
> > > > I use a screw extractor (from Sears) and then replace the screw with
a
> > new
> > > > one after removal.
> > > >
> > > > WBob
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Dr M J DiGirolamo" <DrD at 2020.com>
> > > > To: <test-equipment at mailman.qth.net>
> > > > Sent: Tuesday, July 13, 2004 10:18 PM
> > > > Subject: [Test-Equipment] Difficult Allen Screws
> > > >
> > > >
> > > > > Dear Colleagues,
> > > > >
> > > > >          I need some help and or tips on how to remove frozen
Allen
> > > > > set-screws like the ones found on equipment knobs.
> > > > >
> > > > >          The typical scenario happens when trying to remove a
> stubborn
> > > set
> > > > > screw. The Allen wrench "slips" and rounds the insertion pattern
> > > > > slightly.  Has anyone heard of a slightly oversized set of Allen
> > > wrenches
> > > > > (on the order of .001" - .002") or is this the wrong approach?  If
> > they
> > > > > exist, who supplies them?
> > > > >
> > > > >      Any comments and/or suggestions are welcome.
> > > > >
> > > > > Regards,
> > > > >
> > > > > Mike DiGirolamo, W4XN
> > > > > Charlottesville, VA 22901
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> > > > >
> > > > >
> > > > >
> > > >
> > > >
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