#### GUIDE ON HOW TO OPEN A Z4 HEADLIGHT ON PAGE 2 PICS INCLUDED####
I've noticed how common cloudy headlights are so I thought I'd post a how-to on whats needed to properly restore the lenses to as new condition.
Just polishing can make a big difference but isn't strong enough to fix the problem properly. So what you need to do is sand them down first. The trick is to work up the grades. If you skip a grade you will likely see scratches from the previous grade you used.
This headlight wasn't particularly cloudy but had a fair few deep scratches and little stone marks etc which are actually harder to get rid of. So the grades I used were:
320
500
800
1500
3000
Then a 3 stage machine polish with 3m green yellow then blue pads with the corresponding compounds. Fast cut plus, extrafine then ultrafina. On to the pics:
after 320
after 500
after 800
after 1500
after 3000
After the 3 stage machine polish. (the last polishing stage doesn't do much so a 2 stage does almost as good a job)
For cloudy lenses that dont have any deep scratches or marks I would start with 500 not 320. I used an air powered da sander for this but other sanders will works as well as doing it by hand. I mostly use 3m products so grades 800 1500 and 3000 are all 3m as well as the polishes and pads used.
I've noticed how common cloudy headlights are so I thought I'd post a how-to on whats needed to properly restore the lenses to as new condition.
Just polishing can make a big difference but isn't strong enough to fix the problem properly. So what you need to do is sand them down first. The trick is to work up the grades. If you skip a grade you will likely see scratches from the previous grade you used.
This headlight wasn't particularly cloudy but had a fair few deep scratches and little stone marks etc which are actually harder to get rid of. So the grades I used were:
320
500
800
1500
3000
Then a 3 stage machine polish with 3m green yellow then blue pads with the corresponding compounds. Fast cut plus, extrafine then ultrafina. On to the pics:
after 320
after 500
after 800
after 1500
after 3000
After the 3 stage machine polish. (the last polishing stage doesn't do much so a 2 stage does almost as good a job)
For cloudy lenses that dont have any deep scratches or marks I would start with 500 not 320. I used an air powered da sander for this but other sanders will works as well as doing it by hand. I mostly use 3m products so grades 800 1500 and 3000 are all 3m as well as the polishes and pads used.
if anyone would care to enlighten me it would be appreciated 
