# DIY: Carbon Fiber Fender Vents/Mold Making

**URL:** <https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918>\
**Category:** Builds\
**Created:** [March 30, 2008, 8:52pm UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918 "2008-03-30T20:52:28Z")\
**Posts on this page:** 16\
**Page:** 2

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [March 31, 2008, 6:49am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/21 "2008-03-31T06:49:11Z")

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famous last words: “this will be my only mod, with the exception of maybe wheels”

> [@Jagermeister](#):
>
> Where’s the carbon pole?

will start that thread soon i guess. :deadhorse2:

> [@Zer0DazE](#):
>
> So the first mold was a bust i assume. What are you using to bond the vent pieces together?

yeah, first mold is a bust, mainly because it wasn’t 100% perfect due to my inexperience. Plus, the rubber was expensive (over $100 for that single pour) and i still needed to do the passanger side vent. The 2nd mold is much cheaper, ~$30 for both passanger and driver side molds.

> [@justa4door](#):
>
> looks crazy nice…so how much $$ do you think you could make with them selling and such

Everything price wise is jacked up for Rovers…so a modest $300 for a set wouldn’t be out of the question. Carbon Fiber interior Trim is about $7K… so by comparison it doesn’t seem bad.

> [@newman](#):
>
> were each one of the bad pieces permanently bonded to an OEM part, or did you use mold release on it?

mold release. These are just overlays. I sacraficed a single set of OEM parts for the molding process. They are just slip-on and adhere. Nothing needs to come off the truck to put these on.

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [March 31, 2008, 6:50am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/22 "2008-03-31T06:50:26Z")

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> [@LAFENGAS](#):
>
> mold release, these are just overlays. I sacraficed a single set of OEM parts for the molding process. They are just slip-on and adhere. Nothing needs to come off the truck to do this.

i figured as much.  
are the front and rear the same? or 4 separate parts?

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [March 31, 2008, 6:51am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/23 "2008-03-31T06:51:05Z")

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> [@newman](#):
>
> i figured as much.
> 
> are the front and rear the same? or 4 separate parts?

easier to sell them that way…people don’t like spending extra money and doing extra work for the same end result.

all 4 are seperate…and different from eachother. I had to make 4 molds.

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [March 31, 2008, 6:53am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/24 "2008-03-31T06:53:38Z")

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> [@LAFENGAS](#):
>
> easier to sell them that way…people don’t like spending extra money and doing extra work for the same end result.

if i had to guess… (knowing how lotus guys were)

they would rather buy a replacement part than deal with adhering the overlays.  
In fact, if you do intend to sell, i would recommend against selling them as overlays, and only selling completed parts.

If people want overlays, they can contact you for a special offer.

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**Author:** ![Mike93](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mike93/32/7325_2.png) [@Mike93](https://forums.speedlife.net/u/Mike93)\
**Post date:** [March 31, 2008, 6:54am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/25 "2008-03-31T06:54:15Z")

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Impressive work! Can’t wait to see what they look like installed.

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**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [March 31, 2008, 7:02am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/26 "2008-03-31T07:02:16Z")

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> [@newman](#):
>
> if i had to guess… (knowing how lotus guys were)
> 
> they would rather buy a replacement part than deal with adhering the overlays.  
> In fact, if you do intend to sell, i would recommend against selling them as overlays, and only selling completed parts.
> 
> If people want overlays, they can contact you for a special offer.

personally, that’s the way i would do it for myself. But these pieces literally snap on because the fit is so tight. Also, the overlay wraps 100% around the corners so it looks like a solid piece. The “adhesive” would likely be a couple drops of silicon to make them more difficult to remove.

I guess when i think of overlays, people tend to think of “pull and peel” with nasty edges and it looks like a sticker

The main problem with doing replacement pieces…i would need to purchase OEM parts, because the mounting tabs can’t be easily replaced with a single layer CF (they are multi dimensional)

i’ll try taking a picture shortly with them on…they just wont be clear coated.

**EDIT:** I think i know what you meant…yeah, i could use my current process and just bond them to the OEM pieces myself.

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<div class="post-metadata">

**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [March 31, 2008, 7:05am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/27 "2008-03-31T07:05:44Z")

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> [@LAFENGAS](#):
>
> EDIT: I think i know what you meant…yeah, i could use my current process and just bond them to the OEM pieces myself.

do a core charge on the parts you sell… I really think you would have better sales.

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**Author:** ![Anonymity](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/anonymity/32/7215_2.png) [@Anonymity](https://forums.speedlife.net/u/Anonymity)\
**Post date:** [March 31, 2008, 7:08am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/28 "2008-03-31T07:08:36Z")

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i dont know, I would have to see them installed. when you left the house I was thinking about it and thought “why not just get them color matched to the paint?”

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**Author:** ![juicedz4](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/juicedz4/32/5051_2.png) [@juicedz4](https://forums.speedlife.net/u/juicedz4)\
**Post date:** [March 31, 2008, 8:12am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/29 "2008-03-31T08:12:18Z")

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Looking great as usual.

Good stuff.

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<div class="post-metadata">

**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [March 31, 2008, 8:12am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/30 "2008-03-31T08:12:38Z")

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pics to show fit, NOT FINISHED  
These will appear more black once they are clear coated.

> [@Anonymity](#):
>
> i dont know, I would have to see them installed. when you left the house I was thinking about it and thought “why not just get them color matched to the paint?”

because that’s easy and already done by others. I wanted to do something a bit different.

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<div class="post-metadata">

**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [March 31, 2008, 8:14am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/31 "2008-03-31T08:14:28Z")

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look really nice.

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<div class="post-metadata">

**Author:** ![Anonymity](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/anonymity/32/7215_2.png) [@Anonymity](https://forums.speedlife.net/u/Anonymity)\
**Post date:** [March 31, 2008, 8:35am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/32 "2008-03-31T08:35:45Z")

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> [@LAFENGAS](#):
>
> because that’s easy and already done by others. I wanted to do something a bit different.

Now that you have on the rover, it looks good. I dont like the marker light…

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<div class="post-metadata">

**Author:** ![LAFENGAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lafengas/32/7573_2.png) [@LAFENGAS](https://forums.speedlife.net/u/LAFENGAS)\
**Post date:** [March 31, 2008, 8:42am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/33 "2008-03-31T08:42:02Z")

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> [@Anonymity](#):
>
> I dont like the marker light…

oh yeah,…forgot…that’ll be changed too.

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<div class="post-metadata">

**Author:** ![dozr](https://avatars.discourse-cdn.com/v4/letter/d/41988e/32.png) [@dozr](https://forums.speedlife.net/u/dozr)\
**Post date:** [March 31, 2008, 8:50am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/34 "2008-03-31T08:50:38Z")

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Looks Great Josh, I actually prefer the matte look.

I’ve never really like the look of everything on a car being color matched, it usually ends up looking weird, makes the car lack contrast or something.

The change is subtle, and looks factory - which is awesome.

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**Author:** ![reliant\_turbo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/reliant_turbo/32/7189_2.png) [@reliant\_turbo](https://forums.speedlife.net/u/reliant_turbo)\
**Post date:** [March 31, 2008, 9:25am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/35 "2008-03-31T09:25:25Z")

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that looks really good… and if i didnt see all the screwups 😉 it would have said that you made it look too easy. 🙂

Brian

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**Author:** ![Onyx\_Z32](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/onyx_z32/32/7581_2.png) [@Onyx\_Z32](https://forums.speedlife.net/u/Onyx_Z32)\
**Post date:** [March 31, 2008, 9:45am UTC](https://forums.speedlife.net/t/diy-carbon-fiber-fender-vents-mold-making/45918/36 "2008-03-31T09:45:16Z")

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It needs a subtle, embossed, LAFENGAS logo going up the side. :tup:

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