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MMD > Archives > December 2006 > 2006.12.21 > 02Prev  Next


Removing Rusted Wood Screws and Fixing Holes
By Walt Kehoe

Al Pebworth mentioned the use of a soldering iron to loosen screws
locked in place by Super Glue.  The soldering iron is a miracle
tool for many things other than soldering electrical connections
and joining metals together.

When Joe Hanulec and I were faced with removing from our Wurlitzer
Mandolin PianOrchestra Model 33a literally a hundred screws that
had rusted the entire length of the screw since at least 1931,
we discussed and tried, on samples, every possible remedy we could
think of.

One day I decided to try a soldering iron.  Knowing that if you
have a dab of molten solder on the tip of the iron the heat transfer
is almost instantaneous, I decided to try this.  We had been leery
of trying the iron because we felt that, by the time the screw
heated up, the wood would be scorched.  I placed the smallest tip,
with a dab of molten solder on it, that would cover 1/2 side of the
screw, from its slot to its circumference.  The tip was left on the
screw for a few seconds and removed quickly.  The screw would expand
in the slot then shrink back to normal size as it cooled.

Well, imagine our surprise when every single screw was extracted from
its hole without breaking.  The screws extracted in this manner ranged
in size from 2-inch-long #8 to 1/2-inch-long #2.  Now, bear in mind
that the residue from the rust remained in the hole.  After coating
the inside of the holes with a medium viscosity Super Glue, the excess
was removed from the hole with a probe from a round tooth pick.

Letting the Super Glue cure for a week (that was our schedule for
working on the instrument, every Saturday) insured that there would be
no uncured glue to capture the screw.  It worked and none of the screws
stripped after they were cleaned and re-inserted into their Super Glue
strengthened holes.  I know you will be glad, after you try this, that
you heard it here.

Walter Kehoe
Syosset, New York


(Message sent Thu 21 Dec 2006, 20:05:52 GMT, from time zone GMT.)

Key Words in Subject:  Fixing, Holes, Removing, Rusted, Screws, Wood

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