Danny D.:
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 o
it, and they use floor cleaning machines over the tape without it comin
off. And, it comes in various colours and various widths.
Loading Image...
For example, with the rack shown in this photo:
http://farm8.staticflickr.com/7379/9568891966_2d99e79f78_o.gif
I'd just cut a piece of 2 inch wide white lane marking tape, and fold i
over the edge of the rack so that the tape is 7/8 inches wide along th
edge of the rack and the adhesive surfaces stick to each other betwee
the tynes of the rack.
PS1:
Someone mentioned MEK earlier.
MEK and acetone are both "Ketones". A ketone is anything with th
following structure...
A
|
C=O
|
B
Where A and B can be anything and C and O are Carbon and Oxygen atom
respectively, with a double bond between them.
If both A and B are methyl groups (-CH3), then it's called "dimethy
ketone", or "acetone" for short.
If A is a methyl group (-CH3) and B is an ethyl group (-CH2-CH3), the
it's called "methyl ethyl ketone", or "MEK" for short. Or, if you'r
stoned, if A is the ethyl group and B is the methyl group, it's stil
MEK.
So, acetone (which is nail polish remover) and MEK are chemica
siblings. MEK is acetone's big brother.
PS2:
Both carbon and silicon both form 4 covalent bonds. So, methane has
chemical formula of CH4 cuz the carbon atom forms a covalent bond wit
each of 4 hydrogen atoms.
Silicone also forms 4 covalent bonds, just like carbon, so chemist
wanted to know what they'd get if they used silicon instead of carbon t
make plastics.
The first successful plastic made from silicon was the silicon rubbe
that we still use today as silicone caulk. Chemists noticed that th
number of oxygen atoms and the number of silicon atoms in the ne
plastic were equal, and so there was some speculation that the structur
of the new plastic was that of a long ketone; like this:
|
Si=O
|
Si=O
|
Si=O
|
So, they combined the words "silicon" and "ketone" to name the ne
plastic "silicone". That's why it's Silicon Valley, but it's silicon_e
caulk.
Well, it turns out they got the structure of silicone rubber all wrong.
It turns out the real structure of silicone rubber is:
.......|
.......O
.......|
H3C-Si-CH3
.......|
.......O
.......|
H3C-Si-CH3
.......|
.......O
.......|
H3C-Si-CH3
.......|
(pardon the periods)
Basically, it's a -Si-O-Si-O-Si-O-Si-O-Si-O-Si-O backbone with tw
methyl groups bonded to each silicon atom.
So, since it didn't look like a ketone after all, chemists quickl
renamed the plastic "di methyl siloxane", but everyone still calls i
"silicone" cuz the original name stuck. So, if you see anything wit
the word "siloxane" in it's name, it means it's a silicon base
plastic.
Dow Corning has a section on it's web site explaining the chemistry an
properties of silicones, or more correctly, siloxanes:
'Fascinating Silicones - Dow Corning
(http://www.dowcorning.com/content/discover/?e=
--
nestork
