From: noel shelley (noel@shelley1722.freeserve.co.uk)
Date: Sat Jun 19 2004 - 02:29:24 PDT
Hi Cor ,
First try using a small 1/2 lb ball pein hammer and sharply hit
the head of the screw a few times after a good squirt of wd40 or similar.
this may loosen the screw . then try a screw driver . If that doesn` t work
then use a small chisel 1/4" or 3/8" wide ,no bigger and try to drive the
screw round by the head using the small hammer , this usually works .
Before drilling try some heat , gas welding nozzle is best , you only want
to heat the bolt if you can ! Redose with wd40 then repeat the above . The
thermal shock will often break the rust .
If you must resort to a drill use one slightly bigger than the screw , the
hardest part is getting the drill started in the middle . once the drill has
cut to the stem of the screw the head will spin free and stop you drilling
down the thread , the drum can be removed and then the vise grips or a drill
will remove the rest . If drilling out check the core size of the bolt and
drill that size , then pick out the spiral of thread, BUT concentricity is
vital .
IF you have arc welding gear or MIG then simply weld a small piece of bar or
an old bolt on to the head , the heat will do no harm and also break the
rust on the thread , then simple unscrew .
Good luck Noel
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