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I wanna make my own spoiler 

 

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 Post subject: I wanna make my own spoiler
Posted: Thu Feb 17, 2005 5:02 pm 
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Okay guys i am getting ideas. I have used some car metallic spray paint that wasn't cheap, to modify a part in the car. Anyways i am really pleased with the finish that i did with the paint and bog that i used for that. The thing is i am getting an idea to make a custom spoiler for the car. i think i might use 16mm MDF or bit thinner and some rounded edges and and some other angles with bog that i would do myself (and with some advice from dad).

What do you reckon. I reckon between the height of the Ef/EL XR6 spoiler and the new BA -GT spoiler height.

Comments please before i start to waste my time once again on the car.

Cheers

PS the only prob i think would be the weight but what do you think. Also be honest.

Last edited by DMac on Thu Feb 17, 2005 8:59 pm, edited 2 times in total.

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Posted: Thu Feb 17, 2005 5:12 pm 
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its always good to see something cutom made. id say go for it :)

 

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Posted: Thu Feb 17, 2005 5:29 pm 
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mate - it's gonna look a bit "tacky" using MDF etc...
I rekon its gonna be a waste of your time. Your better off going to a pro and getting something made up to your design.
Its gonna cost a lot more, but the final result is gonna be a whole lot better.

btw - your post is a little hard to read. maybe slow down a bit when you type :wink:

Cheers,
Adz

 

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Posted: Thu Feb 17, 2005 5:56 pm 
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Quote:
btw - your post is a little hard to read. maybe slow down a bit when you type


Thanks man. i just read it and i sound like a retard. i wil edit it now.

Its bloody msn

Cheers
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Posted: Fri Feb 18, 2005 8:28 am 
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Give it a go, got nothing to lose. Just seal the MDF both sides with fiberglass resin.

 

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Posted: Fri Feb 18, 2005 8:39 am 
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Don't use MDF. Get a block of polystyrene and hot wire cut that to shape, thats how we make model aircraft wings some times.

Use epoxy resin, as polyester will eat the styrene.

 

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Posted: Fri Feb 18, 2005 9:02 am 
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raiki wrote:
Don't use MDF. Get a block of polystyrene and hot wire cut that to shape, thats how we make model aircraft wings some times.

Use epoxy resin, as polyester will eat the styrene.


That would be a better way of doing it. Much lighter.

 

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Posted: Fri Feb 18, 2005 9:29 am 
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Quote:
raiki wrote:
Don't use MDF. Get a block of polystyrene and hot wire cut that to shape, thats how we make model aircraft wings some times.

Use epoxy resin, as polyester will eat the styrene.


That would be a better way of doing it. Much lighter.


Is eproxy resin a liquid when you work with it or is it like a filler?

Oh and also, is it expensive?
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Posted: Fri Feb 18, 2005 1:30 pm 
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This might seem a little crazy, but consider making just a frame to begin with, and wrap it in tracksuit material from any clothing material shop. Then just fibreglass over the top of it to harden the material (you dont need the sheeting for this bit, just the resin). This stuff works great for keeping tight lines and hardens really well as a shape for fibreglassing.

The beauty of this, is that you can pull this tight against your frames to give a perfect line. I know a lot of Car Audio shops use this method for fibreglassing sub boxes...

 

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Posted: Fri Feb 18, 2005 1:46 pm 
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The DMac wrote:

Is eproxy resin a liquid when you work with it or is it like a filler?

Oh and also, is it expensive?


Yes, epoxy resin is a two part liquid. It's not terribly expensive, but slightly more than polyester.

Also a lot of people are alergic to epoxy so make sure you wear gloves.

 

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EF Fairmont, 5.0Lt, Pacemaker Headers, Sports cats, Redback muff, T5 manual, 16" Tickford rims, Tickford "Body Styling", DBA Gold Rotors, Heritage Green, JVC MP3
XB Coupe, 351C, twin system, C4 shift kitted auto, 9" LSD, Eccose Blue, very loud !!!!

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Posted: Fri Feb 18, 2005 2:50 pm 
Getting Side Ways
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i am talking about using bog, how do you work with polyester. Isn't that the stuff clothes are made of.

Also i would love to use fibreglass if i knew how but i find bog is quick and simple. its just a pain sanding.
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Posted: Fri Feb 18, 2005 3:08 pm 
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Polyester is a chemical. It can be in many forms, including fabric for clothes.

The polyester I am talking about is a fibreglass resin, a bit like epoxy, in a thick liquid form. About the viscosity of cold motor oil.

My sugestion is make the shape out of polystyrene foam (Stryofoam), seal it with epoxy, then lay it up with fibreglass cloth and epoxy resin. This is how the moulds are made for body kits.

Bog will crack and will be too heavy. It is too brittle for something that needs a little flex.

 

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EF Fairmont, 5.0Lt, Pacemaker Headers, Sports cats, Redback muff, T5 manual, 16" Tickford rims, Tickford "Body Styling", DBA Gold Rotors, Heritage Green, JVC MP3
XB Coupe, 351C, twin system, C4 shift kitted auto, 9" LSD, Eccose Blue, very loud !!!!

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Posted: Fri Feb 18, 2005 3:34 pm 
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oh hang on

now i am getting it.

I make a mould out of polystyrene. then seal it with epoxy. then i put fibreglass and epoxy. what about instead can i seal the polystyrene with something else and just fill it with resin. so really th foam will be like a dye/mould for the resin which dries hard.

Do you think that will work.

Cheers
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Posted: Fri Feb 18, 2005 4:34 pm 
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No, bare resin will be as bad as bog. You need the fibreglass mat, thats where all the strength comes from.

Your not really making a mould, your spoiler will always be full of styrene. Very light. This is basically a male mould that is left in place after the skin is attached.

 

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EF Fairmont, 5.0Lt, Pacemaker Headers, Sports cats, Redback muff, T5 manual, 16" Tickford rims, Tickford "Body Styling", DBA Gold Rotors, Heritage Green, JVC MP3
XB Coupe, 351C, twin system, C4 shift kitted auto, 9" LSD, Eccose Blue, very loud !!!!

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Posted: Fri Feb 18, 2005 4:39 pm 
Getting Side Ways
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right, now i get it. okay

Thanks for the help. i understnd now.

Cheers man

thanks for the help again
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