E90Post
 


Bimmer Retrofit
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > Fog light wet sand



Reply
 
Thread Tools Search this Thread
      01-20-2012, 02:05 PM   #1
mistryn
Lieutenant Colonel
mistryn's Avatar
35
Rep
1,997
Posts

 
Drives: BMW 335D
Join Date: Oct 2011
Location: Mids

iTrader: (7)

Fog light wet sand

Ever since I got my car, the stone chipped fog lights have been doing my nut in as it let down the front.

I found the best way to do this was to remove the fog lamp itself.

To do this, you need to remove the wheel arch liner as per youtube video below (thanks for that)


The fog lamp is held by 3 bolts (think its 7mm bolts), undo these and the fog lamp will slip out from the front. They are located by the 3 arrows.


This is my first time wet sanding and it’s something I was a bit apprehensive of carrying out. I only had time to do one fog light and it started to rain as I was fitting the fog light back on. So the other fog light and headlights will be done over the weekend.

I forgot to take a picture of the left lamp whilst it was on the car but it looked very similar to the right. The lens was heavily pitted and marked.


Ready to be wet sanded



I started out with an assortment of wet and dry, I originally started with 800 grit wet and dry but it did not remove the deep pitted marks. So I worked my way from bottom 240 – 600 – 800 – 1200 – 2500


50/50 after 240 grit


800 grit


2500 grit


As you can see after 2500 grit there is still some pitted marks, I was very cautious so decided to leave it as it is and attempt it again over the weekend.

Then I got kicked out of the kitchen as I was making too much of a mess

I then used some scholl S3 compound on a small spider pass at 800 rpm to pass, then 3 passes at 1200 rpm and then 1 pass at 900 rpm
50/50


Then I finished off with megs plastx (my camera battery ran out by this stage)

Then back onto the car (I have still yet to do both headlights and the other drivers fog light)


So I have gone from


To this

Overall I am quite happy with the result, its not a 100% perfect as I had limited time and was up against the weather (I wish I had a garage to work from)


I finished off using a sealent just to protect the finish.
Thanks for reading
Appreciate 0
      01-20-2012, 02:11 PM   #2
DavS1
Major
DavS1's Avatar
Scotland
19
Rep
1,172
Posts

 
Drives: Emfree
Join Date: Aug 2010
Location: Glasgow

iTrader: (0)

Garage List
2011 BMW M3  [0.00]
Looks like a job well done well worth doing if they are as bad as yours!
__________________
http://www.e90post.com/forums/signaturepics/sigpic97427_1.gif
Monte Carlo Blue M3 Comp
Appreciate 0
      01-20-2012, 02:15 PM   #3
mistryn
Lieutenant Colonel
mistryn's Avatar
35
Rep
1,997
Posts

 
Drives: BMW 335D
Join Date: Oct 2011
Location: Mids

iTrader: (7)

Thanks, I am quite pleased how they turned out. Just need to figure out how to get the headlights off without causing damage lol

The chrome grills now have been replaced with matt black grills. Need to get the lower grills off (I dont know how they come off) so I can spray them matt black
Appreciate 0
      01-20-2012, 03:34 PM   #4
willhollin
Major General
willhollin's Avatar
England
123
Rep
9,918
Posts

 
Drives: VW T5
Join Date: Apr 2008
Location: Worcestershire

iTrader: (1)

Garage List
Good work!
__________________
Appreciate 0
      01-20-2012, 05:02 PM   #5
NJ 1161
Major
NJ 1161's Avatar
20
Rep
1,089
Posts

 
Drives: 335D M3
Join Date: Nov 2011
Location: UK

iTrader: (0)

Interesting stuff. I have noticed pitting on my headlights but not sure if brave enough to start sanding them down! Can the headlight lense be replaced?

Last edited by NJ 1161; 01-22-2012 at 04:08 PM.
Appreciate 0
      01-20-2012, 05:08 PM   #6
Brian mc21
Captain
Brian mc21's Avatar
No_Country
10
Rep
917
Posts

 
Drives: E91 320d M Sport
Join Date: May 2011
Location: Belfast. Northern Ireland.

iTrader: (4)

Is there not some sort of coating on the headlights. Thought I seen that on here somewhere. Excellent work on the fogs.
__________________
E92 330D LCI
Garage List
NSR 250 MC21, CBR 600RR 3
RVF400
Appreciate 0
      01-20-2012, 05:35 PM   #7
mistryn
Lieutenant Colonel
mistryn's Avatar
35
Rep
1,997
Posts

 
Drives: BMW 335D
Join Date: Oct 2011
Location: Mids

iTrader: (7)

Quote:
Originally Posted by NJ 1161 View Post
Interesting stuff. I have noticed pitting on my headlights but not sure if brave enough to start sanding them down! Can the headlight lense be replaced
I would personally only wet sand if they were in a bad state like my fogs. If they only look slightly cloudy/milky then you can get away with a polish and pad on a rotary machine polisher.

There are some kits out there i.e. Meguirs Headlight polishing kit/3M headlight kit where you can get attachments that go onto your drill etc

I have read that too, some people on detailing world who have done this have experienced no problems. Some say you take off the UV coating which few months down the line the lamps will look cloudy/milky. I just used a sealent which contains uv protection and will regularly protect the lights and shouldnt see it being a problem
Appreciate 0
      01-20-2012, 05:49 PM   #8
ed335d
Major General
ed335d's Avatar
United Kingdom
81
Rep
6,899
Posts

 
Drives: E92 M3
Join Date: Jun 2008
Location: Surrey, UK

iTrader: (3)

Garage List
57 e92 M3  [5.00]
2008 e92 335d  [0.00]
Proper OCD there
__________________
E92 M3, Jerez Black, Fox Red Novillo, 19'' M Double Spoke, folding mirrors, lumbar support, front seat heating, PDC, USB, DAB, EDC, Bluetooth, Logic 7, High Gloss Shadowline, big smile
Appreciate 0
      01-20-2012, 07:09 PM   #9
GoRomeo
Colonel
GoRomeo's Avatar
26
Rep
2,363
Posts

 
Drives: 330i
Join Date: Feb 2006
Location: San Diego CA

iTrader: (0)

Garage List
2006 330i  [2.83]
Quote:
Originally Posted by mistryn View Post
Ever since I got my car, the stone chipped fog lights have been doing my nut in as it let down the front.

I found the best way to do this was to remove the fog lamp itself.

To do this, you need to remove the wheel arch liner as per youtube video below (thanks for that)


The fog lamp is held by 3 bolts (think its 7mm bolts), undo these and the fog lamp will slip out from the front. They are located by the 3 arrows.


This is my first time wet sanding and it’s something I was a bit apprehensive of carrying out. I only had time to do one fog light and it started to rain as I was fitting the fog light back on. So the other fog light and headlights will be done over the weekend.

I forgot to take a picture of the left lamp whilst it was on the car but it looked very similar to the right. The lens was heavily pitted and marked.


Ready to be wet sanded



I started out with an assortment of wet and dry, I originally started with 800 grit wet and dry but it did not remove the deep pitted marks. So I worked my way from bottom 240 – 600 – 800 – 1200 – 2500


50/50 after 240 grit


800 grit


2500 grit


As you can see after 2500 grit there is still some pitted marks, I was very cautious so decided to leave it as it is and attempt it again over the weekend.

Then I got kicked out of the kitchen as I was making too much of a mess

I then used some scholl S3 compound on a small spider pass at 800 rpm to pass, then 3 passes at 1200 rpm and then 1 pass at 900 rpm
50/50


Then I finished off with megs plastx (my camera battery ran out by this stage)

Then back onto the car (I have still yet to do both headlights and the other drivers fog light)


So I have gone from


To this

Overall I am quite happy with the result, its not a 100% perfect as I had limited time and was up against the weather (I wish I had a garage to work from)


I finished off using a sealent just to protect the finish.
Thanks for reading
Great work in my opinion. Can you tell us briefly all the stuff you bought an and tools you used, cost etc? I want to do this on my car sometime soon.
I appreciated.
Appreciate 0
      01-21-2012, 03:05 AM   #10
Reggie-g75
First Lieutenant
3
Rep
321
Posts

 
Drives: X6 40d
Join Date: Jun 2011
Location: Bristol

iTrader: (0)

Do you think something like this would be ok on the e92 round fogs?

http://compare.ebay.co.uk/like/29062...Types&var=sbar
Appreciate 0
      01-21-2012, 03:45 AM   #11
Dr Dave
Zummerzet Zyder Drinker!
Dr Dave's Avatar
United Kingdom
63
Rep
5,541
Posts

 
Drives: '06 330D Le Mans Blue
Join Date: May 2009
Location: Somerset

iTrader: (3)

Garage List
Hell I hate it when people quote large picture posts................
__________________
Appreciate 0
      01-21-2012, 04:19 PM   #12
mistryn
Lieutenant Colonel
mistryn's Avatar
35
Rep
1,997
Posts

 
Drives: BMW 335D
Join Date: Oct 2011
Location: Mids

iTrader: (7)

THanks everyone for comments


Quote:
Originally Posted by GoRomeo View Post
Great work in my opinion. Can you tell us briefly all the stuff you bought an and tools you used, cost etc? I want to do this on my car sometime soon.
I appreciated.
Tools required -
Socket set
Wet and Dry assortment sandpaper
Rubber block (can use a wood scrap block)
Rotary polisher with attachment for pad (I have a cheapo blue silverline rotary polisher)
4" Polishing spot pad - I got mine from Elite Car Car
Polishing compound - I used Scholl S3 polish and bought from above. But you can use other polishes such as 3M polish/Menzerna polish. You can also get Meguirs plastX polish designed specifically for polishing plastic

Out of the above I only had to buy the wet and dry paper which was £5 in total as I already had the above in my kit

If you dont have the above and just want to do the headlights, then I would suggest buying a plastic headlight restoration kit. I.e. Meguirs headlight restoration kit or the 3M kit which iirc is about £30. This will include various sanding discs and polish/pad combo and attachment for your cordless drill

I must stress that wet sanding should inly be done if your lense are in really bad condition. Try to use a polish and pad combo first because if you go too far then its new lights time

Quote:
Originally Posted by ed335d View Post
Proper OCD there



Quote:
Originally Posted by Reggie-g75 View Post
Do you think something like this would be ok on the e92 round fogs?

http://compare.ebay.co.uk/like/29062...Types&var=sbar
I think the size of the discs would be a little too big but if you are taking the lights off the car then could be ok. But I personally prefer the spot 4" pads as it gives more control
Appreciate 0
      01-21-2012, 04:46 PM   #13
Reggie-g75
First Lieutenant
3
Rep
321
Posts

 
Drives: X6 40d
Join Date: Jun 2011
Location: Bristol

iTrader: (0)

Quote:
Originally Posted by mistryn View Post
THanks everyone for comments




Tools required -
Socket set
Wet and Dry assortment sandpaper
Rubber block (can use a wood scrap block)
Rotary polisher with attachment for pad (I have a cheapo blue silverline rotary polisher)
4" Polishing spot pad - I got mine from Elite Car Car
Polishing compound - I used Scholl S3 polish and bought from above. But you can use other polishes such as 3M polish/Menzerna polish. You can also get Meguirs plastX polish designed specifically for polishing plastic

Out of the above I only had to buy the wet and dry paper which was £5 in total as I already had the above in my kit

If you dont have the above and just want to do the headlights, then I would suggest buying a plastic headlight restoration kit. I.e. Meguirs headlight restoration kit or the 3M kit which iirc is about £30. This will include various sanding discs and polish/pad combo and attachment for your cordless drill

I must stress that wet sanding should inly be done if your lense are in really bad condition. Try to use a polish and pad combo first because if you go too far then its new lights time








I think the size of the discs would be a little too big but if you are taking the lights off the car then could be ok. But I personally prefer the spot 4" pads as it gives more control
Nice one, will be investing!
Appreciate 0
      01-22-2012, 03:49 PM   #14
330i07
Enlisted Member
0
Rep
35
Posts

 
Drives: 330i sport
Join Date: Jan 2012
Location: Yorkshire

iTrader: (0)

Thats pretty awesome.
Appreciate 0
      04-29-2012, 09:05 PM   #15
Njprince0226
Lieutenant
Njprince0226's Avatar
7
Rep
563
Posts

 
Drives: E90
Join Date: Sep 2011
Location: New Jersey

iTrader: (1)

What is a small spider pass?
Appreciate 0
      04-30-2012, 02:02 AM   #16
mistryn
Lieutenant Colonel
mistryn's Avatar
35
Rep
1,997
Posts

 
Drives: BMW 335D
Join Date: Oct 2011
Location: Mids

iTrader: (7)

Quote:
Originally Posted by Njprince0226 View Post
What is a small spider pass?
I am not sure what you mean?
a spider pad is just a type of polishing pad if thats what you mean?
Appreciate 0
      04-30-2012, 02:48 AM   #17
Mart1000
Capt Slow
Mart1000's Avatar
14
Rep
1,076
Posts

 
Drives: Leon FR Supercopa
Join Date: Jan 2012
Location: Suffolk

iTrader: (1)

Quote:
Originally Posted by Dr Dave
Hell I hate it when people quote large picture posts................
Was just about to put the same. No need for it.

Op, well done good job mate.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 06:51 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST