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Headlight Restoration


jaykaylay
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18 hours ago, Evillusion said:

I did it own my own. Buy water proof abrasive paper, grit 400, 600, 800, 1500 and 2000 each. Cut them to smaller size. Spray paint lacquer clear coat (Good ones not MIC brand). Thrash bag to protect the car frontpaint work.

1. Use water proof paper 400 + water to remove the initial layer of the headlight till rather smooth. Best is use straight stroke as the initial layer of plastic will be very rough due to usage. Headlight plastic cover will be very dull and cloudy.

2. Continue with the remaining water proof paper 600 and so on so forth until the headlight plastic is really smooth. 

3. When using 800-2000 grit paper, try to use circular motions to make the surface as even and smooth as possible.

4. Cover the headlight with the plastic thrasbag and cut according to the headlights shape and use masking tape to cover all expose cars paintwork around the headlight. 

5. Make sure the headlight is free from water dust and water.

6. Spray the headlight with the clear coat. You will need  to spray 3 layers of clear coat minimum.

PS* I used a MIC spray paint and it dried like maps on the headlight....but its ok as it is very light and can only be noticed if you take a very close look. Thats why i suggested to buy a good spraypaint brand. It looks kinda new....better than the rough yellowish surface it once was. Total damage was less than $20 for both headlights and it gave ne a good exercise while using the abrasive papers.

Sounds very similar to what I did except for step 4. 

For step 4, for the 3 levels of sandpaper grit, I used horizontal, vertical, and then horizontal. No circular motions at all. 

Main problem encountered is when the first pass is done and the headlight lens become cloudy - it gets hard to distinguish which areas have been done and which areas haven't. 

Once all sanding is done, for step 5 I used 70% isopropyl alcohol to clean the lens from all the contaminants from the sanding prep work. 

Unfortunately if there is crazing within the headlights, restoration won't be able to eliminate that at all. 

The "maps" like thing you mentioned sounds more like due to the coats being sprayed on too thick - leading to overspray and uneven drying. It is always very tempting for the first pass to do a "gao gao" layer and cover as much as you can in 1 pass, but one has to always remember that the best effect is to have several thin layers which dry fast and gives a smooth effect, and to spray from side to side, starting with the spray directed at nothing - then sweep across to the lens - and then end the spray after the nozzle is out of the zone of the lens. 

This is because the start of the spray and the end of the spray will always be thicker than in the middle of the spraying. And never spray starting directly on the lens surface! 

Edited by Comage
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17 hours ago, Evillusion said:

This guy took too many short cut but result still ok

 

Anyone can do restoration - just need to remove the oxidized layer of plastic. 

But doing a good job that lasts - that's the key. 

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18 hours ago, Evillusion said:

I did it own my own. Buy water proof abrasive paper, grit 400, 600, 800, 1500 and 2000 each. Cut them to smaller size. Spray paint lacquer clear coat (Good ones not MIC brand). Thrash bag to protect the car frontpaint work.

1. Use water proof paper 400 + water to remove the initial layer of the headlight till rather smooth. Best is use straight stroke as the initial layer of plastic will be very rough due to usage. Headlight plastic cover will be very dull and cloudy.

2. Continue with the remaining water proof paper 600 and so on so forth until the headlight plastic is really smooth. 

3. When using 800-2000 grit paper, try to use circular motions to make the surface as even and smooth as possible.

4. Cover the headlight with the plastic thrasbag and cut according to the headlights shape and use masking tape to cover all expose cars paintwork around the headlight. 

5. Make sure the headlight is free from water dust and water.

6. Spray the headlight with the clear coat. You will need  to spray 3 layers of clear coat minimum.

PS* I used a MIC spray paint and it dried like maps on the headlight....but its ok as it is very light and can only be noticed if you take a very close look. Thats why i suggested to buy a good spraypaint brand. It looks kinda new....better than the rough yellowish surface it once was. Total damage was less than $20 for both headlights and it gave ne a good exercise while using the abrasive papers.

Wah ! Abang Evillusion is back …after you kilat2 your lens U went from 29 to 28 🤣… must have been buzy with the Madhatter n rakan 2

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@Comage i actually waited for more than an hour to spray the 2nd layer. While waiting after the 1st coat, the 'maps' emerged eventhough it was not thick. Same thing happened after the 1st coat on the right headlights. I just guess its due to the mic spraypaint as i have been regularly using spraypaint in my course of work and i had never had this issue with the spraypaint bought by through our normal vendor.

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@BanCoe eh...you dont start with the Levi's 28" hor....i trying to get to 29" by end of this yr. Bro MazdaOwner had been supportive through the hell i went through this past  2 yrs and its time i pick myself up and live my life. 🤲🤲🤲

Edited by Evillusion
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1 hour ago, Comage said:

Anyone can do restoration - just need to remove the oxidized layer of plastic. 

But doing a good job that lasts - that's the key. 

Thats why i tried to do it on my own and save a bundle....result not that great but still ok.

 

Screenshot_20220122-161758_Gallery.jpg

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Used the following 3M headlight restoration kit on my wife's Subaru at 10 years old when we renewed the COE and for an afternoons effort the results were outstanding. If you are going to make the effort to try and restore them then I think its worth using a reputable product and for less than $20 its not a big investment to try. We kept the car for another 2 or 3 years and there was no noticeable deterioration in that time... 

https://www.amazon.sg/3M-Headlight-Restoration-System-39008/dp/B001AIZ5HY/ref=asc_df_B001AIZ5HY/

before.jpg

after.jpg

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A friend sent his to get done at doctor glass. He said they used some mist coming out of a heated bottle to clear up. Likely is chloroform. For sure will cause crazing of the plastic when chloroform is used. 
best method is still the good old sand and polish and then coat with some uv protection. 

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2 hours ago, Mkl22 said:

A friend sent his to get done at doctor glass. He said they used some mist coming out of a heated bottle to clear up. Likely is chloroform. For sure will cause crazing of the plastic when chloroform is used. 
best method is still the good old sand and polish and then coat with some uv protection. 

The other alternative is bug spray right... But no good solution - it melts the plastic and creates a sticky mess down the road. 

ChrisFix created a video discussing this some years back. 

My conclusion is - acrylic clear coat paint works to seal in the sanded off plastic lens. 

If you have UV clear coat paint, even better. 

Ceramic coating works as well since it's supposed to offer protection for your paints as well (UV protection). 

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43 minutes ago, awhtc said:

I just ordered some sandpapers and a bottle of ceramic 9H coating. I will give a try by hand polishing. If everything fails, I will just change install a new pair of headlights to last another 7-8 years. 

I suggest watching Ammo NYC's guide before you start... This is by far the best guide I've seen around. 

 

Edited by Comage
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49 minutes ago, awhtc said:

I just ordered some sandpapers and a bottle of ceramic 9H coating. I will give a try by hand polishing. If everything fails, I will just change install a new pair of headlights to last another 7-8 years. 

Easier if you have a drill attachment to polish and sand. 

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Neutral Newbie

Hi Guys,

You may want to try out Meguiar's Headlight Restoration Kit, a D-I-Y Kit that brings back the clarity and shine of the headlight.    Available on-line at Lazada, Shopee, Amazon and at major retail outlets including Autobacs, NTUC FairPrice, Cold Storage and others.

See how easy the process is.

https://youtu.be/CeUlRNPndOc

 

 

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