If you ever have to do that work again, then don't bother with paint;
just use white 2 inch wide lane marking tape.
Lane marking tape has a very strong adhesive, which is also water proof.
Also, lane marking tape itself is very strong because people walk on
it, and they use floor cleaning machines over the tape without it coming
off. And, it comes in various colours and various widths.
For example, with the rack shown in this photo:
I'd just cut a piece of 2 inch wide white lane marking tape, and fold it
over the edge of the rack so that the tape is 7/8 inches wide along the
edge of the rack and the adhesive surfaces stick to each other between
the tynes of the rack.
Someone mentioned MEK earlier.
MEK and acetone are both "Ketones". A ketone is anything with the
Where A and B can be anything and C and O are Carbon and Oxygen atoms
respectively, with a double bond between them.
If both A and B are methyl groups (-CH3), then it's called "dimethyl
ketone", or "acetone" for short.
If A is a methyl group (-CH3) and B is an ethyl group (-CH2-CH3), then
it's called "methyl ethyl ketone", or "MEK" for short. Or, if you're
stoned, if A is the ethyl group and B is the methyl group, it's still
So, acetone (which is nail polish remover) and MEK are chemical
siblings. MEK is acetone's big brother.
Both carbon and silicon both form 4 covalent bonds. So, methane has a
chemical formula of CH4 cuz the carbon atom forms a covalent bond with
each of 4 hydrogen atoms.
Silicone also forms 4 covalent bonds, just like carbon, so chemists
wanted to know what they'd get if they used silicon instead of carbon to
The first successful plastic made from silicon was the silicon rubber
that we still use today as silicone caulk. Chemists noticed that the
number of oxygen atoms and the number of silicon atoms in the new
plastic were equal, and so there was some speculation that the structure
of the new plastic was that of a long ketone; like this:
So, they combined the words "silicon" and "ketone" to name the new
plastic "silicone". That's why it's Silicon Valley, but it's silicon_e_
Well, it turns out they got the structure of silicone rubber all wrong.
It turns out the real structure of silicone rubber is:
(pardon the periods)
Basically, it's a -Si-O-Si-O-Si-O-Si-O-Si-O-Si-O backbone with two
methyl groups bonded to each silicon atom.
So, since it didn't look like a ketone after all, chemists quickly
renamed the plastic "di methyl siloxane", but everyone still calls it
"silicone" cuz the original name stuck. So, if you see anything with
the word "siloxane" in it's name, it means it's a silicon based
Dow Corning has a section on it's web site explaining the chemistry and
properties of silicones, or more correctly, siloxanes:
'Fascinating Silicones - Dow Corning'