How to remove a very stubborn and high risk socket head cap screw
Ignoramus6711 wrote:
Sorry for a bunch of posts at once. I worked all day long (almost) and
gave 1500 lbs of old junk to a scrapper.
Never had this problem before and I REALLY do not want to screw up.
The head of the Bridgeport CNC mill is attached to the turret with
four socket head cap screws, probably 1/2". They have a 3/8" hex hole.
All my attempts to unscrew them failed. I used a nice Unbrako L shaped
key.
Cannot do it without leverage.
With leverage (pipe) the key twists so much, that I really do not want
to push my luck.
I made a tool today from one 3/8" L shaped key: I drilled a
perpendicular hole close to the end of a pipe, and welded the straight
end of the key into that hole. So I can use the pipe as a lever to
turn the key without as much length to twist.
-. (L key)
pipe |
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^ this end will go into the SHCS
I have no idea how will the key behave after having been welded.
I also have hex keys that are driven with a 1/2" breaker bar or an
impact. I am really afraid that it may somehow break the SHCS, which
would be terrible considering its job (holding the mill head).
Any comments?
i
The first thing on my agenda, is to cut off a pc of the hex wrench that
fits--let it stick up a half inch or so---get it's attention with a 2lb
shop hammer---this compresses the rust under the head & the threads--you
can try the impact now, if no results then soak..Jerry
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