DIY BMW OEM Carbon Fiber Clear Coat Repair

GORDON.M3 · 07-25-2018, 06:58 PM

So... I purchased a OEM high-kick spoiler from a member with an E93 a while back and it was damaged.
The spoiler was an OEM E92 M3 high kick spoiler.
The clear coat had been chipped and cracked. I was told that it could be re-cleared/re-coated, so I thought to myself why not.

After taking it to several body shops and random "Carbon Fiber Repair" shops, they all quoted me ridiculous amounts of money for the small repair. The most ridiculous shop wanted to charge me $600!

Started to Google carbon repair tutorials and what not. Stumbled upon this one, where the guy repaired some cracked clear coat from his rear diffuser.

Following the same techniques, I was able to successfully repair my the rear spoiler.

Intial damage:

After sanding with 200 grit, then 400 grit, then 800 grit.

Applied a layer of the epoxy resin with a foam brush as demonstrated from the youtube video linked above.

24 hours later, after the resin has cured.

The end result, I leveled the clearcoat with 1000/2000 grit sandpaper and buffed it till it was shiny. Looks pretty damn good!
Can't even really tell it was damaged before!

So I hope these photos helped anyone whos trying to repair their own carbon fiber at home. Don't be afraid to do it, it was really easy and the results are awesome!

m3jala · 07-25-2018, 11:48 PM

Thanks for sharing. I am sure this will give confidence to someone who needs to make a repair and is being quoted from another dimension to fix it.

last1left · 07-26-2018, 04:19 AM

Good work I've done similar easy it just takes patience resin is easy to work with.

shimmy23 · 07-29-2018, 10:29 AM

Nice! Thanks for sharing

cmyE93M3 · 08-30-2018, 07:34 AM

Awesome.

EJT86 · 08-30-2018, 07:39 AM

Great job! I need to do this to my diffuser

GORDON.M3 · 08-30-2018, 08:27 PM

Quote:

Originally Posted by EJT86

Great job! I need to do this to my diffuser

Yes, diffuser is quite common to have cracks, the same method works for rock chips/rashes on splitters.

LPM3 · 11-18-2018, 11:04 AM

Which brand resin did you use?

GORDON.M3 · 11-18-2018, 11:19 AM

Quote:

Originally Posted by LPM3

Which brand resin did you use?

Anything for countertops will work, some have higher levels of UV resistance than others. Any kind of two-part liquid epoxy resin will work. The best is the kind for marine boats.

LPM3 · 11-18-2018, 11:54 AM

Thanks!

GORDON.M3 · 11-19-2018, 11:37 AM

Quote:

Originally Posted by LPM3

Thanks!

no problem, let me know how it goes!

GORDON.M3 · 01-09-2019, 06:39 PM

oh and I forgot when applying the resin, use this kind of brushes!

InnerBlueSkies · 01-09-2019, 06:58 PM

You did an awesome job my friend. Thanks for sharing.

classic_erik · 03-09-2019, 10:34 AM

I am so impressed with your work.

Do you think I have a shot with this F15 front splitter? Damaged before installing so should be easier to work with...

GORDON.M3 · 03-09-2019, 12:14 PM

Quote:

Originally Posted by classic_erik

I am so impressed with your work.

Do you think I have a shot with this F15 front splitter? Damaged before installing so should be easier to work with...

Thanks!

You can repair it but since its quite a large area you will need to do a lot more sanding and prep work before you can apply the resin.

classic_erik · 04-01-2019, 10:59 AM

DIY Completed! Thanks for your courage and guidance this was really easy...

GORDON.M3 · 04-01-2019, 10:34 PM

Quote:

Originally Posted by classic_erik

DIY Completed! Thanks for your courage and guidance this was really easy...

Glad the guide was able to help you restore your part!

07-25-2018, 06:58 PM	#1
GORDON.M3 Colonel 1419 Rep 2,998 Posts Drives: E92 M3 • F25 X3 M-Sport Join Date: Dec 2013 Location: LAX/YYZ/NRT iTrader: (11)	DIY BMW OEM Carbon Fiber Clear Coat Repair So... I purchased a OEM high-kick spoiler from a member with an E93 a while back and it was damaged. The spoiler was an OEM E92 M3 high kick spoiler. The clear coat had been chipped and cracked. I was told that it could be re-cleared/re-coated, so I thought to myself why not. After taking it to several body shops and random "Carbon Fiber Repair" shops, they all quoted me ridiculous amounts of money for the small repair. The most ridiculous shop wanted to charge me $600! Started to Google carbon repair tutorials and what not. Stumbled upon this one, where the guy repaired some cracked clear coat from his rear diffuser. Following the same techniques, I was able to successfully repair my the rear spoiler. Intial damage: After sanding with 200 grit, then 400 grit, then 800 grit. Applied a layer of the epoxy resin with a foam brush as demonstrated from the youtube video linked above. 24 hours later, after the resin has cured. The end result, I leveled the clearcoat with 1000/2000 grit sandpaper and buffed it till it was shiny. Looks pretty damn good! Can't even really tell it was damaged before! So I hope these photos helped anyone whos trying to repair their own carbon fiber at home. Don't be afraid to do it, it was really easy and the results are awesome! __________________ INSTAGRAM: GORDON.M3 North American Mr12Volt Carplay/Android Auto Distributor DINAN \| EVOSPORT \| VAC \| ARP \| RD SPORT \| NEEZ \| EIBACH \| CSF \| IND \| BILSTEIN \| KLASSEN \| BREMBO \| ENDLESS \| BBS \| BPM SPORT \| PROJECT MU \| EVENTURI
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07-25-2018, 11:48 PM	#2
m3jala Captain 544 Rep 765 Posts Drives: Jet Black 2013 BMW M3 Join Date: Jan 2018 Location: Tysons Corner, VA iTrader: (0)	Thanks for sharing. I am sure this will give confidence to someone who needs to make a repair and is being quoted from another dimension to fix it.
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07-26-2018, 04:19 AM	#3
last1left Lieutenant 175 Rep 450 Posts Drives: e92 M3 Join Date: May 2013 Location: West Coast iTrader: (0)	Good work I've done similar easy it just takes patience resin is easy to work with.
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07-29-2018, 10:29 AM	#4
shimmy23 F15 daddymobile 2341 Rep 3,507 Posts Drives: GS X5 Join Date: Aug 2011 Location: WA iTrader: (3)	Nice! Thanks for sharing
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08-30-2018, 07:34 AM	#5
cmyE93M3 First Lieutenant 286 Rep 307 Posts Drives: E93 M3 Join Date: May 2017 Location: Oakville & Chicago iTrader: (1)	Awesome. __________________ 2008 E93 M3 \| SSII \| HRE P40's (Sold 2018) 2011 E90 M3 \| Jerez Black (Sold 2019) 2019 Lexus IS300 (lasted 3 months) 2020 Toyota 4Runner TRD (fun truck) 2014 Tesla Model S P85 (wicked car) 2011.5 E92 M3 \| Space Grey \| ADV.1?s
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08-30-2018, 07:39 AM	#6
EJT86 Brigadier General 2383 Rep 3,726 Posts Drives: 2018 M2 Join Date: Mar 2014 Location: Boston, MA iTrader: (0) Garage List [0.00] 2018 BMW M2 [0.00]	Great job! I need to do this to my diffuser
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11-18-2018, 11:04 AM	#8
LPM3 New Member 8 Rep 13 Posts Drives: 2011 E90 M3 Join Date: Oct 2018 Location: Orange County, Ca. iTrader: (0)	Which brand resin did you use?
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11-18-2018, 11:54 AM	#10
LPM3 New Member 8 Rep 13 Posts Drives: 2011 E90 M3 Join Date: Oct 2018 Location: Orange County, Ca. iTrader: (0)	Thanks!
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01-09-2019, 06:39 PM	#12
GORDON.M3 Colonel 1419 Rep 2,998 Posts Drives: E92 M3 • F25 X3 M-Sport Join Date: Dec 2013 Location: LAX/YYZ/NRT iTrader: (11)	oh and I forgot when applying the resin, use this kind of brushes! __________________ INSTAGRAM: GORDON.M3 North American Mr12Volt Carplay/Android Auto Distributor DINAN \| EVOSPORT \| VAC \| ARP \| RD SPORT \| NEEZ \| EIBACH \| CSF \| IND \| BILSTEIN \| KLASSEN \| BREMBO \| ENDLESS \| BBS \| BPM SPORT \| PROJECT MU \| EVENTURI
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01-09-2019, 06:58 PM	#13
InnerBlueSkies Captain 1093 Rep 950 Posts Drives: 2008 E90 M3 Join Date: Sep 2014 Location: College Station, Texas iTrader: (1)	You did an awesome job my friend. Thanks for sharing.
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03-09-2019, 10:34 AM	#14
classic_erik Lieutenant Colonel 2809 Rep 1,859 Posts Drives: 23' X7 40i M Sport Join Date: Jan 2019 Location: South Shore, MA iTrader: (12) Garage List 2023 BMW X7 40i M S ... [0.00] 2020 Audi SQ5 [0.00]	I am so impressed with your work. Do you think I have a shot with this F15 front splitter? Damaged before installing so should be easier to work with... Attached Images __________________ My F15 50i M Sport Build Thread
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04-01-2019, 10:59 AM	#16
classic_erik Lieutenant Colonel 2809 Rep 1,859 Posts Drives: 23' X7 40i M Sport Join Date: Jan 2019 Location: South Shore, MA iTrader: (12) Garage List 2023 BMW X7 40i M S ... [0.00] 2020 Audi SQ5 [0.00]	DIY Completed! Thanks for your courage and guidance this was really easy... Attached Images __________________ My F15 50i M Sport Build Thread
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