I am NOT saying that IN ANY WAY. You are insane to even think that's what I meant.
I never said they would oxidize at similar rates, ever.
My analogy is that both materials have no significant protection against corrosion/oxidation.
Yes, one can polish/wax bare headlights every month or two and keep them clear, just like one could polish steel every few days to keep is shiny. Wouldn't you rather cover it with a protective layer that can go years between services?
I looked up what you said in the dictionary,
Origin:
1640–50; <
Latin analogus <
Greek análogos proportionate, equivalent to ana-
ana- + lóg ( os ) ratio + -os adj.
suffix; see -ous
[FONT="] RATIO = RATE, [/FONT]Please do not argue with me, consult a dictionary,[FONT="]. [/FONT]
[FONT="] You said.[/FONT]
I am insane,
Just another of so many anti-social narcissistic traits anyone can read and see throughout your posts, , indicating to me that the only reason you post in response to me is to force me to submit to your will, and do what you say, $10 spray can,
That is a very closed minded attitude,
Condescending, patronizingly superior attitude: 'I am just stating the facts, and thinking about the ladies that are also reading this, remember you are the one continually making these anti-social narcissistic comments, not me,
If anyone has a condescending superior attitude it is you.
If anyone else agrees that they feel I have a condescending superior attitude please except my deepest and most sincere apology,
The truth is I am getting old,
Old age and the tiny amount of wisdom I hope I do have, tells me I cannot take my 17 year secrets with me, so I am in a mad “ STUMBLING “ hurry to share with you all, before it is too late.
Along with my poor computer skills, total lack of formal education, lead me to here where I “do not read” about the things that I know work for me, and have worked for 17 years, with pictures,
So, please take no notice of the “way” I say my stuff, just please, take note of the information and pictures for your own consideration and benefit, and I truly hope you will find more time with your family, or playing Lego’s, not waxing and sanding down every few months,
Please consider this, my experience for the last 17 years is often when I approach where I parked my car in the shopping centre, and look to see if someone has pinched it, ( just once,1996, they did ) when I see the car is there, I am again reminded and amazed that it may be dirty, but what a shine, headlights and all,
( please note the white Caldina GTT in my pictures, new to me 07 and first application, next application 3 months as per specs, next nu-finish application 09, and 3 months later as per specs, pictures above are 2013, and the shine under the dirt is still mirror finish as all can see),
I do not have wax days ever, never ever, kill me first, after a few years I re-apply, because I imagining I am removing a microscopic “ almost invisible polymer oxidization ”,
And I have applied nu-finish to white, royal blue, inca gold, different white, dark blue, light blue, RED, that I owned over 17 years, and lots of others,
Apply it the correct way, and it works, God is my witness,
My point, as I have made over and over, is that clear-coating light housings is a good long-term solution that requires little maintenance.
Ok, ok, ok,
I HEAR YOU OVER AND OVER .
let’s talk about your idea.,
[FONT="]My 1st concern with your recommendation, 400-600 sand, $10 Urethane/ Acrylic spray can, [/FONT]
[FONT="] I know from much of my own experience, that if I sand A OR MANY headlights with varying degree and depth of oxidization, with 400-600, there is no way in the world I will be able to see if I have sanded away, all the existing oxidation on any of those headlights, my experience and my observations show me that there is always more oxidization on the drivers headlight, and can be deeper in patches, [/FONT]
[FONT="]
What I know to be fact is when I sand a headlight, I quickly buff it so I can see if all the oxidization is removed, Quick buffs 3-4 times, every headlight has different grade of oxidization, and also always has a few patches or areas where the oxidization is deeper ( a few inches square of surface area, or smaller, or bigger, ), and because it only takes a few drops of 3M med grade buffing compound on each head light, and a few minutes to buff both headlights, it is easy to see where I have to sand further, [/FONT]
[FONT="]
{{{{{{{{{{{{{{{{{{{{{{{{{{{{{Please note, in proof reading this before posting it occurs to me that a new guy who is about to do his first polish, may be interested in a point, I would like to make clear, when I sand a headlight, I usually quick buff, and look for the deepest oxidization, as well as the general light oxidization “ pitting “ over the hole surface of the lense, I first sand those deep oxidized patches and or areas with p240 grade sanding pad or paper, then change 600 and perhaps sand another %50 of the total surface area, then to 1200 to sand to %75 area, then 1500 to sand the whole lense, then 2000 which gives the surface enough gloss or shine that I can see if I have missed a bit, then buff, which sometimes shows other bits I have missed, [/FONT]
[FONT="]The reason why I mention this is to get a clear definition for the new guy between my method as above, and some of the head light restoration kits that are available, where the instructions maintain that a layer of plastic is methodically sanded over the entire surface of the lens, for each grade of sanding paper or sponge, [/FONT]removing 5-6 layers of plastic in total.
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My point is the method I use is “ much faster “, and does not remove good clean clear plastic that does need to be removed, }}}}}}}}}}}}}}}}}}}[/FONT]
[FONT="] (We are talking sanding 1/4 thickness of a A4 paper, ) [/FONT]
[FONT="]
So, I know if I just give a headlight a good sand all over almost any oxidized head light surface with 400-600 and spray a $10 can of Urethane on it, [/FONT]
[FONT="]
There will be several patches of oxidized plastic trapped under the clear coat, that I could not possible see, causing it look faded in patches, the only way to remove those patches is to first sand off the Urethane or Acrylic I just painted on, then sand the oxidized patches, and buy another $10 can, [/FONT]
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I could not nor can anyone see any form of oxidizatio,n when you or anyone else sand with 400-600, ( lucky your head lights are hidden), [/FONT]
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OK, I can do my method to remove all oxidization, and polish the lens crystal clear, then I can sand with 400-600 and spray a $10 can of clear, or not, [/FONT]
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Then, I, just like the other guys who started this thread, would be asking for help to fix 3-6 months, what you insisted on me doing,??[/FONT]
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Only, I would be adding the Argument that I personally do not trust Urethane or Acrylic because I just removed a clear coat coating from the above Celica GT4, my observation was, the body, roof, rear quarters, doors, hatch lid showed light Urethane clear coat flaking caused by link coat failure, , But please note, the bonnet showed overall and complete flaking, I know that was caused by. [/FONT]
[FONT="]
1, there was no heat soak material at all between the motor and the bonnet skin, [/FONT]
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2, the Celica GT4 engine is well worked, and usually run hot and hard, producing far more heat than Urethane link coat can handle, Obliviously shown in the pics, the urethane was effected by heat, please note the bonnet picture,[/FONT]
The term "urethane" is somewhat of a misnomer when used to describe a paintable protective coating. Urethane, also known as ethyl carbamte, is an
organic chemical that occurs naturally in fermenting alcoholic beverages and was first produced artificially in the nineteenth century for medicinal purposes. Researchers discovered that stringing together chains of urethane molecules by a polymerization process produces a stiff, hard compound that has many industrial applications. Clear finishes for wood and metal often contain this compound, which is more properly known as polyurethane. The different types of this clear finish depend primarily on the solvent in which the polyurethane is dissolved — typically water- or oil-based substrate — and the process by which the finish cures, or hardens.
Or any other clear coat protective coating that fails after 3-6 months,
My experience in restoring many / many sets of headlights, AND ONLY USING a polymer ( nu-finish ) that I have used for 17years works, which I believe cures harder than other clear coating I have experienced,
My line of thought is a Zinc based cross linked Polymer is not adversely effected , “and in fact “, enhanced by passing light and heat , concentrated, and focused by the reflective design of the “ inside” of any modern plastic headlight,
BY THE head light “bulb”,
That bulb in my situation is or has been high watt “ halogen “, new guys please note, EVEN WILKI has a “danger “ warning not to fit a halogen bulb in plastic headlight s that are not approved, for halogen bulbs because they get very HOT,,
[FONT="]
http://en.wikipedia.org/wiki/Halogen_lamp[/FONT]
Halogen lamps get hotter than regular incandescent lamps because the heat is concentrated on a smaller envelope surface, and because the surface is closer to the filament. This high temperature is essential to their operation. Because the halogen lamp operates at very high temperatures, it can pose
fire and
burn hazards
So it is hot, I think more heat cures a polymer /zinc clear coat to a very hard and strong coating, where increased heat and light photons needed for good lighting,
Incandescent photons are the low and less destructive photon / range of the Ultraviolet Radiation Spectrum,
Which basically COOKS, AND DELAMINATES Urethane or others into MORE OF a soft CRUMBLY biscuit crust, or flake , from my observations, ,
When I can get some pictures together of headlight restorations together, I will refer to your misinformed calculations as misinformed, because my experience over the last 17 years,
YOU SAID,
Wouldn't you rather cover it with a protective layer that can go years between services?
For many years I have used this method that does last for years, and this method focuses on a very quick/FAST/ SIMPLE and easy DIY SERVICE, ( NO REMOVING OLD URETHANE, ) catered for the novice through to the wrench, no compressor, no spray gun or spray tin, If I spend any longer than 4-5 mins on EACH service, the headlight owner must be a pretty female, or there is damage to repair, ?. maybe every few years or longer,