Headlight cover lens refurbishing, another take.
08-17-2014, 11:49 AM
#1
AudiWorld Super User
Thread Starter
Headlight cover lens refurbishing, another take.
1st. I already had the headlights removed from the ’02 A6 2.7T, makes the job much easier. No masking involved.
Decided against the kits and hand rubbing. Planned to use my ¼ sheet orbiting finish sander.
Used 3M Scotch-Brite Hand Pads clamped to the sander with its paper clamps. Much more conforming to the curved surfaces than is paper. 6 x 9 pads available at any auto paint supplier, about $1. each.
2. Started with #7446 Gray (SiC) 120-150 grit equiv. wet, garden hose trickle running down the surface.
Back and forth across the length of the surface for about 5 minutes, until all of the original yellowed surface coating was removed.
3. #7447 Maroon (Al2O3) 360-400 grit equiv. wet, about 5 minutes.
4. #7448 Light Gray (SiC) 800-1000 grit equiv. wet, 5 min.
5. #7445 White (Flint )1200-1500 grit equiv. wet, 5 min.
6. Switched to W/D paper, 1000 grit, wet, 5 min. W/D paper from auto paint store, ½ sheet about $1 ea.
7. W/D paper 1500 grit, wet, 5 min.
8. W/D paper 2000 grit, wet, 5 min.
Probably don’t need all these overlapping steps but, first time, had to try them.
9. Auto paint rubbing compound, damp, 5 min. foam pad on sander.
10. Optimum Polish II, 5 min, micro fabric pad on sander.
11. Optimum Opti-Lens Permanent Headlight Coating.
From my research, apparently the most UV resistant final coating currently available but very expensive! $46/10cc but enough for 5 or 6 pairs.
Optimum Polymer Technologies
Opti-Lens Coating
Decided against the kits and hand rubbing. Planned to use my ¼ sheet orbiting finish sander.
Used 3M Scotch-Brite Hand Pads clamped to the sander with its paper clamps. Much more conforming to the curved surfaces than is paper. 6 x 9 pads available at any auto paint supplier, about $1. each.
2. Started with #7446 Gray (SiC) 120-150 grit equiv. wet, garden hose trickle running down the surface.
Back and forth across the length of the surface for about 5 minutes, until all of the original yellowed surface coating was removed.
3. #7447 Maroon (Al2O3) 360-400 grit equiv. wet, about 5 minutes.
4. #7448 Light Gray (SiC) 800-1000 grit equiv. wet, 5 min.
5. #7445 White (Flint )1200-1500 grit equiv. wet, 5 min.
6. Switched to W/D paper, 1000 grit, wet, 5 min. W/D paper from auto paint store, ½ sheet about $1 ea.
7. W/D paper 1500 grit, wet, 5 min.
8. W/D paper 2000 grit, wet, 5 min.
Probably don’t need all these overlapping steps but, first time, had to try them.
9. Auto paint rubbing compound, damp, 5 min. foam pad on sander.
10. Optimum Polish II, 5 min, micro fabric pad on sander.
11. Optimum Opti-Lens Permanent Headlight Coating.
From my research, apparently the most UV resistant final coating currently available but very expensive! $46/10cc but enough for 5 or 6 pairs.
Optimum Polymer Technologies
Opti-Lens Coating
08-17-2014, 01:20 PM
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1st. I already had the headlights removed from the ’02 A6 2.7T, makes the job much easier. No masking involved.
Decided against the kits and hand rubbing. Planned to use my ¼ sheet orbiting finish sander.
Used 3M Scotch-Brite Hand Pads clamped to the sander with its paper clamps. Much more conforming to the curved surfaces than is paper. 6 x 9 pads available at any auto paint supplier, about $1. each.
2. Started with #7446 Gray (SiC) 120-150 grit equiv. wet, garden hose trickle running down the surface.
Back and forth across the length of the surface for about 5 minutes, until all of the original yellowed surface coating was removed.
3. #7447 Maroon (Al2O3) 360-400 grit equiv. wet, about 5 minutes.
4. #7448 Light Gray (SiC) 800-1000 grit equiv. wet, 5 min.
5. #7445 White (Flint )1200-1500 grit equiv. wet, 5 min.
6. Switched to W/D paper, 1000 grit, wet, 5 min. W/D paper from auto paint store, ½ sheet about $1 ea.
7. W/D paper 1500 grit, wet, 5 min.
8. W/D paper 2000 grit, wet, 5 min.
Probably don’t need all these overlapping steps but, first time, had to try them.
9. Auto paint rubbing compound, damp, 5 min. foam pad on sander.
10. Optimum Polish II, 5 min, micro fabric pad on sander.
11. Optimum Opti-Lens Permanent Headlight Coating.
From my research, apparently the most UV resistant final coating currently available but very expensive! $46/10cc but enough for 5 or 6 pairs.
Optimum Polymer Technologies
Opti-Lens Coating
Decided against the kits and hand rubbing. Planned to use my ¼ sheet orbiting finish sander.
Used 3M Scotch-Brite Hand Pads clamped to the sander with its paper clamps. Much more conforming to the curved surfaces than is paper. 6 x 9 pads available at any auto paint supplier, about $1. each.
2. Started with #7446 Gray (SiC) 120-150 grit equiv. wet, garden hose trickle running down the surface.
Back and forth across the length of the surface for about 5 minutes, until all of the original yellowed surface coating was removed.
3. #7447 Maroon (Al2O3) 360-400 grit equiv. wet, about 5 minutes.
4. #7448 Light Gray (SiC) 800-1000 grit equiv. wet, 5 min.
5. #7445 White (Flint )1200-1500 grit equiv. wet, 5 min.
6. Switched to W/D paper, 1000 grit, wet, 5 min. W/D paper from auto paint store, ½ sheet about $1 ea.
7. W/D paper 1500 grit, wet, 5 min.
8. W/D paper 2000 grit, wet, 5 min.
Probably don’t need all these overlapping steps but, first time, had to try them.
9. Auto paint rubbing compound, damp, 5 min. foam pad on sander.
10. Optimum Polish II, 5 min, micro fabric pad on sander.
11. Optimum Opti-Lens Permanent Headlight Coating.
From my research, apparently the most UV resistant final coating currently available but very expensive! $46/10cc but enough for 5 or 6 pairs.
Optimum Polymer Technologies
Opti-Lens Coating
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