Headlight Restoration:
1 - Overview
You can see how much hazing or fading is on the surface of the headlamp. The problem with hazing is it reduces the amount of light going through the headlight. Thus causing very low visibility while driving at night...or even a rainy night. Restoring the headlight will ensure that light will pass through and will make driving at night safer.
2 - What I used
These are the products that I used for this mini project.
-Griot's Garage 3" Dual Action Polisher
-3M Headlight Restoration Kit. The kit includes 500 grit, 800 grit, 1000 grit, and 3000 grit sanding pads, a foam pad for manual sanding (which I didn't need since I'm using the polisher), and a couple of 3M rubbing compounds (I prefer the Meguiar's M105 cutting compound).
-Yellow, Orange, White, and Black foam pads (for cutting and polishing).
-Meguiar's M105 Cutting Compound. This is one of the best cutting compounds.
-Meguiar's M205 Polishing Compound.
-Meguair's M21 Synthetic Sealant 2.0. Paint Sealants lasts longer than wax but won't give a better shine. This is for the headlight anyway.
-Painter's Tape
3 - Rough Sanding
I taped up the areas that needed masking. I started with sanding the surface of the headlights with 500 grit sand paper (two rounds). I put the speed setting of the polisher to 2. The 500 grit was used to get rid of the very rough surface and remove the yellowing that built up over time. Then I went with the 800 grit sand paper (another two rounds) to cut the roughness. Same speed setting was used.
4 - 'Glass Surface' Finishing
Next I sanded the surface with a finer 1000 grit (two rounds again). Then to an extremely fine 3000 grit sanding pad. I kept the same speed setting (2) as the previous runs.
5 - Surface Cutting Begins
I applied Megauiar's M105 Cutting compound on a Yellow Pad. The Yellow pad is the most aggressive pad that I have which is really meant for correcting scratches on clear coat or painted surface using a rubbing compound. This also works very well for this purpose. The speed setting was bumped up to 4.
6 - Clearing Up
It looks great! but we're not done yet.
7 - Glass Finish
For the finish, I applied Meguiar's M205 Polishing Compound on a white pad. The white pad is ideally for a mirror finish on a painted surface. For my purpose, a glass finish. I do have a black pad which is a step higher than the white pad. But it is really meant for a showroom ultra fine finish that isn't necessary for the headlights. The polisher speed setting was set to 6.
8 - Not done. Final Touch.
I applied Meguiar's M21 Synthetic Sealant 2.0 to protect the surface of the headlight. It won't do much against rock chips and road debris, but the protection will mainly be for UV, rain, and other elements that will cause haziness on the plastic surface.
9 - Results
It took me about 2 hours and change to do this. I did not want to rush it since I was looking for a very professional result. I didn't want the polisher to overheat either so I gave it a numerous amount of time to cool down in between the sanding and polishing rounds. That also allowed me to take these pictures with my DSLR.
The lighting pointed on the car was from my Si's headlight. And the car was offset to the M3 which gave that offset lighting.
With the headlights and fog lights turned on.
I hope you enjoyed reading this and checking out the detailed pictures!!! 