What causes this crazy brown crazing on a varnished steel square?
What can be done to get rid of it (so that I can read the numbers on the
I pulled out this measuring square out of my toolbox and was dismayed to
realize that it was almost impossible to read the markings because of
this haphazard crazy brown "crazing" all over the place.
Can it be fixed?
Strip the varnish, put it in an electrolytic derust tank (I know, it
sounds like I'm asking you to do something ludicrous, but I'm running
one right now, and trust me, once you have one set up you will find
stuff to put it it, it's great) paint/varnish. Or buy a new one for $10
The crazing I believe is corrosion caused by moisture/air actually
getting underneath the finish at a tiny flaw and spreading from there.
replace "roosters" with "cox" to reply.
On Sat, 04 Feb 2012 07:22:38 -0500, Nate Nagel wrote:
I had never thought it was rust, but you're the second person to say
Since it doesn't look or feel like any rust I've ever seen, it didn't
even cross my mind that it's rust.
Here's a closeup of the crazing. It's almost as if a tiny burrowing
animal tunneled under the varnish looking for food to eat!
I had a bit of something called neutra rust a long time ago. It was
watery like solution and I used some on a rusting pipe railing and it
has not rusted in 15 years or more. I ran out of the stuff and now
cannot find where to by more. Anyone have a place to buy it or a
replacement for such?
if you mean the rust-converting solution,then an auto store,like PepBoys or
Auto Zone. There also are paints that have the rust-converting ingredients.
if you want rust removing stuff,try a woodworker's store,stuff Like
Ooops. I don't know the difference between varnish & lacquer.
Looking it up by a variety of sources, Wikipedia included, the difference
is interesting ... but after looking that up, I'm still not sure how you
know it's lacquer.
Here's how Wikipedia lists differences:
Here's a synopsis from multiple web sites:
oil + resin + solvent
usually brushed on
relatively high percentage of solids
usually less durable
nitrocellulose + solvent
can be tinted
usually sprayed on
relatively low percentage of solids
usually more durable
I don't see it more durable. I also see lacquer as being able to absorb
moisture. Ever seen clouding on a piece of furniture top. I had clouding
and actual gouging on a car paint finish using one of those bras. Permanent
damage. The finish was lacquer.
I have one of those squares that get all rust. I have to try dissolving the
rust ever so often. Dam hard to read in any condition.
On Sat, 4 Feb 2012 17:08:20 +0000 (UTC), Chuck Banshee wrote:
Lacquer dries solely by the evaporation of its solvent. No chemical change
takes place. When dry, it can be removed with its original solvent
When varnish dries and cures, it combines with oxygen from the air and a
chemical change takes place. Because of this chemical change, its original
solvent will not remove it.
When you hear that piles of oil soaked rags will spontaneously combust,
they are not talking about motor oil. They are talking about oils used in
varnishes and oil based paints (linseed oil, etc.) that combine with oxygen
(oxidize) producing an exothermic chemical reaction as they cure.
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