N Cook wrote:
wrote in message
ups.com...
On 20 Apr, 16:44, **THE-RFI-EMI-GUY** wrote:

Go to Sears and look at the sets of screw extractors (Easi-Outs),
perhaps one the right size will grip the inside of the allen screw. You
might have to drill out the center however.
funny that one of the worst methods is so popular. They have a habit
of making the screw unremovable.


NT


I think I have 2 sets of "easi outs" the smallest ones broken in each set
and even then not small enough for the usual "electronic" seized screws.
Incidently they are CCW / LH (lazy) threaded also.
Incidently using left hand drill bits for grub screws set in bakelite knobs
its a matter of making some small guide tubes to sit in the bakelite and
guide the LH bits into the centre of the screw so it doesn't slide off the
steel.

Here`s a method that might work. Anyone who repairs video recorders has
a sizeable collection of small allen keys. Get the nearest larger
(either metric or non metric) - depending on what the original is, you
might find that it`s only marginally bigger than the original hole and
wont quite fit in. Freeze it with your trusty freezer spray and
hopefully it will push in. let it warm up back to room temperature, and
with a bit of luck, it just might grip enough to get the grub screw moving.

As the professor said, It`s a long shot, but it might just work.


Ron(UK)