John
>I have many "bar" clamps of the "Quick-Grip" variety. They have
>served me well for many years but have a tendency to rust.
There are several phosphoric acid based products
that will neutralize the rust and leave a black oxide finish.
Pick one.
Lew
Presumably, it's steel? You can form a stable black oxide on steel,
by
removing the wax, heating, and either using a blueing compound or
(really old fashioned) some rags and vinegar. Clean the result,
heat again, and rub down with a waxy rag (paraffin will do, some
like beeswax); the slightly blackened steel will hold the wax better
than the clean post-sanding steel.
A dehumidifier, run in your shop for an hour each evening, will
probably prevent
condensation well enough to keep the steel bits from growing dewdrops.
I use a temperature/humidity "weather station" in the basement to
keep an eye on the hazard to all my rustables, and seasonally adjust
the
dehumidifier.
The solution is to keep the clamps inside a container, along with a
desicator. Wiping your tools with a rag dampened with kerosene is
effective in rust prevention.
All my tools are kept in the garage for now and I don't seem to have
problems with most tools (I keep the TS covered and use Boeshield on
it) but I have noticed creeping crud on my Irwin bar clamps lately.
I'll try oxalic acid to get the stuff off the black oxide, but what
about using something like Boeshield on the clamps? I still want them
to clamp. ;-)
Mike in Ohio
Pete Stanaitis
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