On Thu, Feb 21, 2008 at 6:55 PM, Berry Kercheval <berry@kerch.com> wrote:
> ejrussell@mebtel.net wrote:
> > However, how often is it the only problem is the screw head
> > is damaged - vs the screw head is damaged because the screw
> > itself is corroded into oneness with whatever it is screwed
> > into and prior attempts to remove said screw have thus
> > damaged the screw head? In the latter case the 'damaged
> > screw remover' is less effective.
> >
> Good point. From time to time I've found various degrees of "force" to
> work, roughly in order:
>
> * a screwdriver
> * a Very Big Screwdriver
> * a Very Big scredriver and vice-grips
> * penetrating oil (appropriate for the material; kroil for steel,
> "Mouse Milk" for aluminium)
> * penetrating oil and an impact driver
> * heat
> *Heat, penetrating oil (not at the same time!) and an impact driver
> * drill for and use ez-out or other screw extractor
My rough order for any screw is
* hose down with penetrating oil.
* screwdriver/wrench
* hammer
* more penetrating oil
* bigger screwdriver
* bigger hammer
* swear
* air chisel
The chisel works really well on anything that's large enough diameter,
particularly if you're going to replace the damn thing the screw goes
into. I have a better sucess rate with it than I do with drills and
easy outs.
--
David Scheidt
dmscheidt@gmail.com
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