FG spoiler build
Printed From: the12volt.com
Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=76347
Printed Date: April 20, 2024 at 3:37 AM
Topic: FG spoiler build
Posted By: nicholas moffet
Subject: FG spoiler build
Date Posted: April 17, 2006 at 1:40 AM
wondering how to build a spoiler / visor for my car out of FG. Here is some pictures of what I want to do. Is if hard? and would I be able to do it?. I have worked with fiberglass before and I am pretty good with it but I need to figure out how to get the shape of the spoiler and what would be the best way to do it. Any ideas I would be most thankfull 
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Replies:
Posted By: hakosuka
Date Posted: April 17, 2006 at 6:35 AM
maybe make it out of foam or mdf. not sure tho. i wanted to do same thing you are one day, hope it turns out nice
Posted By: mi_what
Date Posted: April 17, 2006 at 8:34 AM
Do they not sell one for you car? If they do it would probably be in your best interest to go with that one. Making something like that might cost less (no more than $100 less though)but it might just be too much trouble to try and build one by yourself.
However, now with that out of the way, I would say your best bet is expanding foam. Just be sure to tape off your car REALLY REALLY well before starting any kind of work whether it be fiberglass or foam. the foam would allow you to make the curves that you want by sanding it down with a high grit paper. After you get the shape you want foil and tape over the foam and begin laying glass down; just be careful about glassing the sides and bottom because if it gets too built up it will no longer fit the car.
Hope that helps you but, by all means don't let this be your answer, I'm sure that other people will come up with more ideas just choose the one that you like best.
Posted By: crazyoldcougar
Date Posted: April 17, 2006 at 9:10 PM
i would also use foam...depending on the shape of the glass you may beable to just use a sheet of 1.5" rigid insulation..
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Fiberglass Guru.
Posted By: nicholas moffet
Date Posted: April 17, 2006 at 10:46 PM
ya ,its pretty flat really, only a slight curv but doesnt that type of foam get eaten away buy the resion? is it that stuff you can buy at home depot because if it will work than I will try it. Thanks for the info
Posted By: hakosuka
Date Posted: April 18, 2006 at 3:45 AM
i think you could just cover the foam with foil/tape and glass over that
Posted By: placid warrior
Date Posted: April 18, 2006 at 10:08 AM
use a piece of foam and curve the sides down to the edge of the window...when u get the shape and gap that u want for the underside of the spoiler just tape and foil the thing and glass away. I'm just not sure how that thing is mounted....possibly a good double sided adhesive tape? If u do mount it with the double side tape then u need to make flat spots for the tape to stick to as well as making sure everything is CLEAN when u attach it. u can also make the flat area by leaving a lip on the bottom of the foam that fits flush with the window and then mask the top and bottom of the foam and then wrap the FG around the bottom of it?
Posted By: torquehead
Date Posted: April 19, 2006 at 12:16 AM
All good answers there Nicholas. If you use the sheet foam method, use the blue kind that is closer to the thickness you want. Cut a template out of the upper portion of the window so you can fabricate a contact section, which is the actual bonding surface to the window. Lay the template on the foam sheet, trace it, cut the foam out so you have a "plug" that is the U-shape (that is if its the same shape of the car in the picture). Then make a template for the shape of the upper visor section. Lay, trace, cut this part out. Glue/tape the foam parts together the way you intend them to be, and test-fit. Sand/grind/contour the rough edges or sides down to the desired shape. Cover the surfaces with foil. Apply resin, then glass sheet or mat to the top-most section and saturate with more resin, roll it out and let cure. Turn the part over as if your looking at the mounting surface. Apply resin to the mating surface, then FG mat (make the mat of this part overlap the other section so that there is a bond of the two. Lay more resin/FG mat as required to your desired thickness (you can always sand it down a little). I wouldnt do more than 3 layers since it doesnt support anything other than resist wind flex. After the part is fully cured, pour laquer thinner, carb or brake cleaner in it to melt the foam away. Finish the part out with body filler, putty cote, ect...paint it.....attach it with 3M double sided tape.... Ive only fabricated 4 of these for 4 different cars. What car are you fabricating this for?
Posted By: nicholas moffet
Date Posted: May 10, 2006 at 11:45 PM
What I did was taped off the top as neatly as possible then layed glass over that.I have cut out the section of the spoiler that will contact the window that is shaped like a U that. i have pictures at http:www.cardomain.com/ride/2123181/3 .My question is what do I do next. The part left over from what I cut I am using as the plug that will give the gap between the window and spoiler. I took the plug and sprayed foam on it and I will sand to make the negitive. there is a diagram included to show what I have done so far. If there is a better way or I am doing it wrong please let me know.
Posted By: crazyoldcougar
Date Posted: May 11, 2006 at 7:03 PM
first trim and clean up your contact piece...get it to the exact shape you want...personally i would build the plug directly over the contact piece not below it like in your drawing, and shape the final build from there...basically now that the contact portion is finalized..tape it off and build directly over it, then remove the foam and mold the two pieces together..
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Fiberglass Guru.
Posted By: torquehead
Date Posted: May 11, 2006 at 9:07 PM
I ditto Cougar, but before I commit with words I was wondering something. The picture on Cardomain.com that is named "2123181_67", did you fiberglass the window section as if this will be the piece that will be the spoiler part? Meaning, were you using the contour of the window to for the spoiler? If so, I have further comments as well as ideas for finishing, but if not, I ditto CrazyOldCougar for the best of interests.
Posted By: nicholas moffet
Date Posted: May 12, 2006 at 1:16 AM
Well, To tell you the truth I am kinda stuck.The contact section is the exact conture of the window and fits perfectly. Making the underside of the spoiler plug is harder than I thought because It is hard to get it to the perfect shape to make the negitive.I used the foam to do it but there were too many holes and if really does not need to be that thick so I just used bondo. I posted more pics to show what I mean. I not really sure how too use the bottom contact section and build up from there? What do you mean by this? I tried using the spray foam but it just does not seem to come out right.I just want to say thanks for the imput it is helping through something I have never tried before.
Posted By: nicholas moffet
Date Posted: May 12, 2006 at 1:36 AM
Another thing is the larger piece that I use for the negitive I have bondoed it and will be sanding even more than in the picture. I also plan to use this as th top on the spoiler as well. I would love to still hear your ideas though no matter what they are.
Posted By: nicholas moffet
Date Posted: May 15, 2006 at 11:56 PM
Wow, This spoiler is looking great ,heres what I got so far. It is turning out fantastic. tell me what you guys think? https://www.cardomain.com/ride/2123181/3
Posted By: Velocity Motors
Date Posted: May 15, 2006 at 11:58 PM
Nice work on the spoiler. Did it take you awhile to get it smooth enough to paint ?
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: nicholas moffet
Date Posted: May 16, 2006 at 12:06 AM
Dam. This was alot more work then it looks,It is still not ready. Still needs alot of work / sanding. but I am very very happy with the way it turned out!! I want it to be perfect for when it goes to paint so it looks like the car came that way.
Posted By: placid warrior
Date Posted: May 16, 2006 at 2:01 AM
wow...very nice job.
Posted By: slimmatic
Date Posted: May 16, 2006 at 5:59 AM
Looks great, but there is a lot of work involved for something that small. Don't think I would;ve put the effort in, but nice work nonetheless.
Posted By: nicholas moffet
Date Posted: May 16, 2006 at 3:27 PM
Fiberglass worping / distortion. I just built a spoiler and I am worried about it worping under the hot sun. Is there anything I can do?
Posted By: crazyoldcougar
Date Posted: May 16, 2006 at 4:07 PM
the sun will not cause your fiberglass to warp... once it is mounted ther is no chance of it warping... fiberglass warps mainly during the curing process, where excessive heat created from the endothermic reaction between the MEKP and the resin...also if a piece is not fully cured and is left to rest in a position where the piece is bent there is a chance of it warping... but like i said once cured and mounted it wont warp.. ------------- Fiberglass Guru.
Posted By: primal impulse
Date Posted: May 16, 2006 at 10:01 PM
yea nice job on the spoiler man.... I was curious on how I could go about making my own fiberglass wing for my car...like the one that goes on the trunk...err for me its a hatch...95 Eclipse. ------------- Hustle, Loyalty, Respect
Posted By: nicholas moffet
Date Posted: May 16, 2006 at 10:26 PM
Get ready for some work !!!!but it is well worth the it because I am getting complements left and right and its not even painted. My friend at work has a 95 eagle talon so I will look at it and tell you what I think. The process is very hard to explain but I kind of explain it in this thread and some other people on this site have great Ideas.
Posted By: torquehead
Date Posted: May 20, 2006 at 10:13 PM
Sorry Ive just now recognized the post again. Good job, wasnt what I pictured, but all is well. Im actually relieved that it wasnt going to be large...LOL!!! So, thank you for not building a "Fast and Furious" spoiler. Looks good, clean, and practical!!!
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