Homemade spider. Making a spoiler with your own hands

", many motorists, having installed on their" basin "something more like a football goal, refer their" masterpieces "to the class of pumped cars.

But if you do not like such a scenario and you have decided to approach this issue thoroughly, I recommend this article to you as a guide, with which you can create the right wing with your own hands, spending a minimum of money and your free time.

The task of the wing is to press down on the rear drive end, thus increasing traction and improving.

My article today is about how to make a DIY rear spoiler , without resorting to the help of specialists, using available tools and the necessary material for this.

The spoiler was created directly on the model, a rigid spoiler frame was designed, after which the part was molded and glued using a rough matrix (template). Everything about everything takes about ten days, provided that the hands are straight and the time is in full swing. The design was spied on one of the models, to be honest, I don’t even know which one I saw something similar, but as often happens, my hands simply reproduce some fragments or fragments from memory, as a result something of my own comes out .. ...

So let's go ...

DIY spoiler: template

First of all, I figured out the approximate width of the wing , after which he cut off the necessary piece of hardboard. The convexity of the roof was reproduced by means of a chipboard curved guide.

Then I sawed out a rail in the shape of an arc and screwed it to the bottom to a strip of hardboard, after which, due to the load, the hardboard itself formed the outer surface of the future spoiler.

Helped to fix the wing in space - plasticine. With the help of scotch tape, I sealed all the places where the plasticine slides will be placed. Using thick layers, I formed the spoiler supports, then installed a chipboard wing strip on them. By the way, plasticine perfectly allows you to adjust the angle of inclination of the spoiler plane, as well as its symmetry.

The next stage is cutting out the brackets from hardboard, which are installed on the sides of the wing close to the pillars of the car body. It remains to fix them with plasticine with inside... The final stage of creating a template matrix was gluing the hardboard with fiberglass strips, it took several hours to polymerize (dry) the resin, after which my frame was ready.

Removing the frame was successful - there were no deformations or distortions, the spoiler model was removed easily. Thus, I got the upper part of the future template, according to which it will be possible to sculpt the matrix and wing.

The spoiler matrix I created is split into two parts. The beauty of making a spoiler "quick" lies in the fact that first of all, the upper part of the model is created, the matrix is removed from it, and after that the bottom is added.

To form the spoiler matrix it is necessary: use a thin and thick glass mat. On top of the wool glass mat, a layer of fiberglass is laid to secure and strengthen the matrix.

The second stage of making a spoiler with your own hands is adjusting the spoiler layout.

After the resin has hardened in order, the inverted wing can be turned over and checked what happened inside. Then I built the symmetry and formed the side struts (supports).

Then he corrected the corners of the model - stuck it in and cleaned it together with the matrix flange.

I covered the lower part of the spoiler with fiberglass and made holes for the bolts, they should be located as close as possible to the spoiler model, this will allow the matrix halves to press better and more tightly.

I trimmed the "hairy" edges of the matrix using a grinder, since the thickness of the plastic consisting of 2 half-molds is about 6-7 mm thick. At the end of trimming, the edges need to be cleaned a little, this will save you from unpleasant glass splinters.

It turned out to be extremely inconvenient to open the resulting spoiler matrix; I had to first use a knife blade. I passed them between the half-forms with light, slightly opening movements. After that, I inserted wedges and all kinds of chips into the resulting thin gap. After some time after not very pleasant manipulations, the half-forms of the matrix are still revealed.

To clean the matrix from the remnants of plasticine, I used plastic scrapers, after which I blew everything thoroughly with a hot industrial hair dryer and removed the remnants with a sponge.

The part is formed with the obligatory use of a gelcoat, do not use an external one at all, protective layer on the spoiler is not recommended. The fact is that after staining, there is a possibility that the texture of the fiberglass will begin to show through. Also remember to apply a release layer of the matrix and gelcoat using a wide brush.

I want to note that the aluminum powder gelcoat is not without its drawbacks, the main of which is the base made of polyester resin for molding. Paraffin, which is part of this resin, during polymerization is able to rise to the surface of the gel ... When everything hardens, the gelcoat has to be lightly sanded.

While the gelcoat dries up, there is time to cut the glass mat and dilute the thick "balanda" consisting of aerosil and "polyester", this substance will be needed to fill the sharp corners of the matrix.

You can understand what contact molding is by looking at the example of my spoiler. The gelcoat is covered with polyester resin, then covered with glass mat. I make the first layer from the three hundredth one. Then a resin is applied on the surface of the glass mat, after which it is nailed to the gelcoat with a brush. To get rid of air bubbles, which are highly undesirable, use a special cross-notched roller or make your own.

I recommend trimming the edges of the newly formed part using sharp knife until the polyester resin has passed from a jelly-like state to a solid. This is important because this seemingly insignificant detail saves a lot of time. The formed spoiler halves must be removed from the matrix and the edges must be slightly finished with sandpaper.

The climax ...

DIY spoiler- ready! In addition, in the process, I managed to create a matrix, according to which I in the future can do more than one such in case of such a need. The process of gluing the two halves is as follows: on the edges of the spoiler halves, which are installed in the half-mold of the matrix, strips of gruel consisting of aerosil and polyester resin are laid in a small slide. When the two halves are put together, these strips of porridge touch, firmly gluing the two parts into one.

Now you can get the finished wing and proceed to the final stage: sanding the hardened porridge and preparing the spoiler surface for painting.

Well, something like this ... From now on you know how to make a spoiler with your own hands, moreover, now you can create matrices and templates yourself, followed by casting a wing of any shape. By the way, once having figured out how to make a matrix with your own hands, in the future you can use this experience not only for spoilers, but also for the manufacture of body parts, such as aerodynamic body kits, skirts, air intakes and much more.

Surely one of the most simple ways outwardly decorating an ordinary car, giving it the style of a racing car, is to make a spoiler. And it does not matter that the automaker did not foresee this from the very beginning. If you are friends with your own hands, then you can solve this problem yourself.

In this article, you will not find thoughts on how to install a spoiler on a station wagon (for example, a VAZ 2109), on a Gazelle, and even more so on a truck. We will talk about the spoiler as a tuning element that will adorn any sedan. However, this information will be useful for those who want to decorate any other car.

Of course, the main purpose of the spoiler is to improve the aerodynamics of the car. How is this achieved? The wing of an aircraft generates lift due to its design.

The spoiler is a wing, as you can see in the photo. That is, it is designed so that the air flow pushes the rear of the car to the ground. It is thanks to this that aerodynamics are improved.

In view of this, it is clear that a spoiler made without calculations is just an element of pretentious style. And if you make a spoiler without calculations, then it can even spoil the aerodynamics.

Therefore, the first advice for those who want to make a spoiler with their own hands is to find a good engineer who would help in the design. The rest is a matter of technology.

How to make a conventional spoiler with racks according to ready-made calculations will be described later.

Frame preparation

So, at this stage we know the dimensions and design of the spoiler. The first thing we need to do is the metal frame. To do this, you need a sheet of galvanized iron. This material is well suited for its strength.

If you do not have experience and equipment for cutting and other work with metal, it is better to contact an organization where there are craftsmen and the appropriate equipment.

The spoiler pillars on the side should resemble the Latin letter L. If you decide to make a lip spoiler, then its design will be slightly different.

The thickness of the galvanized metal for the manufacture of the frame is 1.5 mm. The spoiler will be installed on the car using bolt mounts. The bolt holes in the spoiler pillars are 6 mm.

Working with Styrofoam

We can take polystyrene as a material for building up volume. Perhaps it does not have the required rigidity. However, its price is more than suitable for those who are not particularly interested in the aerodynamic properties of the spoiler. The weight of the foam is also good news. V last resort, if you are seriously concerned about the choice of any material specified in this article, it is better to address this question to a professional engineer.

So, from the foam we need to make the forms with which we will glue the frame. We cut the polystyrene with a clerical knife with a large blade, for an emphasis we use a building level. Another advantage of foam as a material is the ease of processing. We use regular sandpaper to adjust the thickness and shape. However, do not get carried away, otherwise you will have to buy a new piece of material.

Styrofoam parts can be processed after they have been glued to the frame.

Video - Cutting Styrofoam.

Working with fiberglass

We buy polyester resin, glass mat and gelcoat, putty, primer, paint of native color, varnish. Then:

Apply a layer of gelcoat to the foam. It needs to be sanded and then covered with layers of polyester resin and glass mat.
We glue the surface of the foam with fiberglass (or, as some call it, fiberglass). This must be done in two or more layers. The first layer will be made of glass mat with a density of 300, and the second - with a density of 600. We glue each next layer after the previous polymerization process has passed. The final layer is again covered with polyester resin.
Make sure that there are no air bubbles under the fiberglass layer when gluing. For greater reliability, you can walk along the surface of the glued layer with a notched roller.

Prices for 1 p. Meter of glass mat 300 are about 100 rubles. Glass mat 600 - about 150 r. for 1 r.m. Fiberglass can also be used for bonding wing parts.

If you want to save time drying your glued fiberglass, you can use a construction hairdryer.

Attention! At this stage, the LEDs (or stop lights) are installed, wires are laid to power them (of course, if you planned to equip the spoiler with lighting devices).

To make the spoiler surface even and smooth, it can be putty, sanded and primed, at the end - painting and varnishing. Be sure to check with the seller if the purchased materials are compatible with those you are already using.

Plaster matrix

If you want to make a copy of the finished spoiler, then you can use plaster as a filling material. Place a spoiler in a styrofoam box and then fill it with liquid plaster. After it has hardened, the spoiler impression is ready. It remains only to cut the cast in two and extract the original from which we removed the mold.

We cover the surface of the impression with cling film. You can also use galvanized iron sheet as a frame.

Fill the mold with plaster of paris to create a new spoiler.

When the spoiler is ready, apply layers of fiberglass to it. It remains to putty, sand, prime, paint, varnish.

These are just some of the ways to make a spoiler with your own hands. There are other options, such as a newspaper spoiler, as shown in the following video.

Spoilers from a car dealership are not always suitable for your car. It happens that a few centimeters are missing. You can, of course, cut a brand new spoiler by making an insert of the required length, but you can make a spoiler yourself, while reducing its cost by almost half! And a nice bonus plus is that you can give the spoiler a shape to your own taste. We stock up on time, and - get down to business.

Choosing between polyurethane foam sealant and foam, we tend to favor the latter, due to the obviously low comparative cost. We need a sheet of polystyrene, 5 cm thick and 1 × 1 m in size. Cut the wing blade diagonally, otherwise the width of the sheet is simply not enough. Next, we make a stand for the number.

As you know, Japanese numbers are smaller than Russian ones and more square, that's why our numbers don't look in the places reserved for them. Cut out the blank, take the epoxy glue in a paper box. Instead of fiberglass, old silk fabrics made from unnecessary things will do. It will take you a couple of days to glue the stand and it will also take several days to sand and paint. In this case, it is better to take the paint in cans, cover it with varnish on top.

The result is this:

Then ... not a spoiler - a lip. It's easier to do. We remove and turn over the bumper, glue the foam blank. She weakly adhered to the bumper with silicone auto-sealant. We remove it and give shape. Then we wrap it with polyethylene bags. You can use women's tights. We just stretch them in two layers on the mold and coat with epoxy glue. When they are completely dry, we take out a blank from the lip.

And in order to avoid problems with this, bags are just needed, since epoxy does not stick to them. Only after a few days or even a week, it will completely polymerize, although it seems dry after just a day. However, a lot here depends on the hardener, more precisely, on its amount: the more there is, the faster the epoxy will polymerize, but it turns out to be more fragile. It's also good to add a platform for flexibility.

Even after that, the glued lip does not have the required strength, so from the inside we glue two more layers of silk fabric and a reinforcing mesh for strength. But instead of silk, it is better to use fiberglass or carbon fiber so that the lip does not crumble! Even the mesh doesn't help! Then we proceed to sanding, after which we apply a primer, and proceed to painting.

Let's start with the spoiler. We make fasteners by cutting out plates from 1.5 mm sheet steel, drill holes with a step of 2-3 cm, 3 mm wide, weld two 6 mm nuts at the base. After that, we glue them into the foam blanks we have.

Then we glue the wing of the wing with two layers of fabric and make the assembly. Apply the glue with a brush, then wash it in a solvent or under a stream hot water... You should not immediately prepare a lot of glue, more than 200 ml, it is difficult to use it all at one time.

So that they don't stick to you foam crumbs, touch the water tap more often - this will help relieve static. It is best to glue up to 3 layers of fiberglass at intervals to cure the resin. This process is accelerated several times at temperatures up to 120 C.

We glue the spoiler, putty and paint with three cans of black paint.

You can make a glass for the stop bar from plexiglass or plexus, but in this case, it is made of epoxy.

A new spoiler has been installed. Summing up the materials spent:

polystyrene - one sheet;
fiberglass about 2 m;
fastening and welding;
LEDs 12 mm - 2 pcs.;
neon lights in the spoiler;
two cans of paint;
3 cans of primer;
epoxy glue about 2 kg;
wires - 2 meters;
Chinese brushes - 3 pieces;
sandpaper.

And all this work took 2 months. If you have enough enthusiasm, get down to business! But painting is still better in the salon.

Wanting to stand out from the gray traffic flow, every car owner comes up with ways to give his car a memorable appearance. Not everyone can afford to paint with an airbrush or completely tune a car. But making a spoiler for the body with your own hands is a task available to the owner of any car model. Such tuning not only refines the exterior, but also gives the car improved aerodynamic characteristics.

What is a spoiler for a car

In a car, a spoiler is a separate element that redirects the air flow to reduce the aerodynamic drag of the body. In addition, the spoiler helps combat body dust and increases downforce while driving. In other words, the spoiler can add extra sportiness to some types of cars.

What spoilers are for

If we talk about the functions of modern spoilers, then there are three main purposes of this element:

giving the car additional acceleration - depending on the type of spoiler, the car can actually get increased downforce and increased aerodynamic characteristics;
dirt-repelling - spoilers prevent dust and dirt from being sucked in from the road from under the bottom of the car;
decorativeness - it must be emphasized that most car owners install a spoiler solely for the sake of giving the car a sporty look.

Depending on the quality of the product and the craftsmanship, amazing results can be achieved during its installation: the car will receive enhanced traction with the road surface, air flows during driving will be redirected taking into account the direction of the car's movement, due to which it will be able to noticeably accelerate.

However, there are also downsides to using spoilers. If the installation of a factory element has clear regulations and is carried out exclusively by professionals, then the car owner may not worry about the quality of the installation and the functionality of the spoiler.

However, in cases where an inexperienced master (or car owner) tries to install a spoiler on a car on his own, it is unlikely that the desired effect will be achieved. If the spoiler is installed incorrectly, it will not be possible to use the oncoming air currents, most likely, the car will experience additional difficulties when driving.

The spoiler is able to give the body a special finished stylish look

Types of tuning elements

It would seem that a spoiler is a highly specific element for a car. However, there are several types of spoilers, each of which stands out depending on the style, location on the car body or material.

Variations in style

There are only two types of spoiler styles in the world:

factory - these are products that are produced by the largest manufacturers of elements for auto tuning, as well as homemade spoilers that are outwardly identical to factory products. As a rule, such elements have a classic appearance and are suitable for installation on most models of machines;
individual - this type of spoiler includes factory spoilers, produced in limited quantities, and homemade products... However, there are significant differences in shape, color and proven aerodynamic properties. Individual styling does not always guarantee that the car will be given additional acceleration.

Differences in location on the car body

There are four types of spoilers according to their location, with the most common being the rear spoiler. It is mounted on the trunk lid.

The rear spoiler is especially popular with Russian drivers.

Roof spoiler - option for advanced jeepers

The third place in the sphere of giving the car special aerodynamic properties is shared by two types of spoilers at once, which are mounted on bumper skirts or on side skirts.

A spoiler on the front bumper skirt gives the car a sporty look

Varieties by type of material used: photo

Modern spoilers can be made from the most different materials... The main criterion is the strength and lightness of the product, as well as its durability. Therefore, spoilers are made primarily from these raw materials:

fiberglass (or, as it is also called, fiberglass). By its composition, this substance belongs to plastic materials, which are produced with the addition of synthetic resin additives and fiberglass. Fiberglass spoilers are considered the most affordable in the car tuning industry today. However, the low price does not affect the quality of the product in any way: the fiberglass spoiler has the same strength and durability characteristics as its more expensive counterparts;

The fiberglass spoiler is distinguished by its low cost and sufficient service life

plastic type ABS. By itself, this type of plastic is quite fragile, therefore, when making spoilers, various strengthening additives and impurities are added to it. Due to their low cost, ABS spoilers sell well, but their durability is poor;

Spoiler made of ABS plastic is relatively cheap, but fragile

silicone materials. The production of silicone spoilers for cars began relatively recently. The great advantage of such products can be considered their elasticity and increased durability, since air flows even with long-term operation cannot deform such a spoiler;

The spoiler made of silicone materials is elastic, durable and attractive in appearance

carbon (or carbon fiber material) is one of the most modern types of raw materials from which a spoiler can be made. The product will give the car excellent aerodynamic characteristics, however, the cost of carbon spoilers is quite high;

The carbon fiber spoiler is quite expensive, but the envious glances of other car owners more than compensate for this small flaw.

light metals - aluminum and steel. Making a whole spoiler made of metal is unprofitable and pointless, therefore, light types of metals are used only for casting individual elements- blades, struts and flaps.

Metal spoiler - an option for solid cars and real men

How the spoiler works

Depending on the type of product, the principle of its operation will also differ. For example, located on the boot lid, the spoiler builds up air pressure over the boot and rear glass. If there was no spoiler, then a rarefaction of air would form in this place, which directly affects the downforce of the car, reducing it. The rear spoiler increases the resistance to air flow and thus allows the car to increase downforce, that is, grip on the road surface.

In addition, the rear spoiler, due to its location, dilutes the generated air pressure under the body of the car, which also increases the aerodynamics of the car.

If a skirt is located on the body and it is mounted on the front bumper, then this leads to a decrease in the air flow pressure under the car, which affects the quality of downforce while driving.

In addition, the spoiler in front of the car additionally builds up air resistance due to its shape, however, it is for this reason that the air friction against the bottom of the car is reduced, which, ultimately, again allows to increase the quality of grip on the road. And another additional property of the front spoiler is that it has a beneficial effect on the overall operation of the cooling system in the car.

How to choose the right spoiler for your car

Having conceived to give his "swallow" additional aerodynamic characteristics and refine its appearance, the car owner decides to choose for himself perfect option spoiler.

The choice of a product should be based on both the material capabilities of the motorist and those design features machines that will / will not allow the installation of a particular type of product. It should be noted that not every spoiler can be installed on a certain car model.

For example, almost any spoiler is suitable for sedans due to the specificity of their body - a shortened and tightened relief. The owners of such cars actively install linden spoilers of the most different forms... For cars in a hatchback body, it is recommended to install a duck tail spoiler - a kind of overlay on the rear window. A car in a station wagon tends to install a spoiler on the roof or on the front bumper more due to its large dimensions.

Standing out in the endless stream of cars in the city is not easy

How to make a spoiler for a car with your own hands

Wanting to save money on buying a factory spoiler and installing it, some motorists are trying to make this element with their own hands. It should be noted that self-production spoiler is considered sufficient challenging task, since the slightest flaws in its design can worsen the dynamic characteristics of the machine. In addition, mistakes made when installing a homemade spoiler can directly affect the development of body corrosion.

However, if you are determined to make your own spoiler for your car, you can choose one of the most common options for making this element. In any case, you need to prepare in advance necessary tools and supporting material:

scissors;
scissors for metal;
stationery knife;
hacksaw;
glue;
Sander;
sandpaper;
masking tape;
felt-tip pens;
degreaser;
ground paint;
auto enamel;

Making a rear spoiler in galvanized iron and foam

The spoiler begins with its design. The first step is to decide on its shape and size. To do this "by eye" will not work, since every millimeter of this product must be clearly verified:

The spoiler design should be determined with the help of an experienced car owner who already has experience in the manufacture of such products or through the involvement of an engineer.
The template is made on cardboard; to create it, you will need to measure the width of the car and luggage cover, mark the place of fasteners on the body.
After creating a template on cardboard, you need to cut it out.
Next, you need to circle the sheet of galvanized iron according to the template and cut the spoiler frame with metal scissors. Traditionally, a galvanized sheet with a thickness of at least 1.5 mm is used.
After making the frame, you will need to increase the volume on it. One of the easiest ways to do this is to use Styrofoam. Separate parts of the future spoiler are cut out of a piece of foam with a clerical knife.
Each piece must be glued into place on the galvanized sheet.
After gluing, a gelcoat (aluminum dust) is applied to the foam layer, and a fiberglass cloth is applied on top of it. In this case, the fabric should lie in several layers so that each new layer is denser and stronger than the previous one.
It is important that there are no air bubbles between the layers when applying fiberglass.
Once a durable finish has been created, the entire spoiler surface should be coated with a polyester resin compound.
As soon as the product is dry, you will need to polish it with high quality.

It should be noted that the primer, paint and varnish are applied only on a flat surface.

Photo gallery: making a spoiler at home

It is important to fit them well together using both welding and glue. After degreasing, pieces of foam can be applied Styrofoam applied to the frame

Fiberglass rear spoiler fabrication

Another affordable option for every car enthusiast, this is making a spoiler with your own hands from plastic materials.

Video: the process of creating a homemade fiberglass spoiler

The step-by-step process for making a fiberglass spoiler is shown below:

The shape of the future spoiler is first drawn on cardboard, after which the necessary fiberglass blank is cut out according to the template.
The struts and flaps are cut from the same material.
These elements are fixed to the very base of the spoiler with an adhesive.
After creating the frame, you will need to glue it over with fiberglass cloth.
When the denser structure has been recreated, it is recommended to impregnate the fiberglass with resin with the addition of aluminum powder to increase its strength.
After the workpiece has dried, it will be necessary to grind it to create the ideal smoothness of the relief.
Further painting works are carried out.

Fiberglass fabric is actively used in the manufacture of spoilers

We make a front spoiler from chipboard, polystyrene and polyurethane foam

Making a spoiler for the front bumper can not only give the car increased aerodynamic properties, but radically change the appearance of the car. However, the technology for manufacturing the front spoiler is somewhat different from the schemes for creating the rear spoiler.

Video: how to make a tuning element yourself from improvised building materials

To make a spoiler from materials stored idle in your garage, it is enough to follow the algorithm below:

First you need to dismantle the front bumper from the car body. This will simplify all further operations.
Then it is necessary to glue the pieces of foam plastic to the chipboard workpiece with a reliable adhesive, both from the outside and from the inside.
Polyurethane foam will need to fill all the voids that will inevitably arise between the glued pieces of foam.
After the foam dries, you will need to give the spoiler the required shape with a clerical knife and special files.
Next, several layers of putty are applied, which are designed to give the element a finished appearance.
After the putty has dried, you will need to sand the spoiler surface well to eliminate all kinds of unevenness.
At the final stage, a primer, enamel and varnish are applied.

After pasting with foam, polyurethane foam is applied

We make side skirts from plaster

Side spoilers or body kits are somewhat easier to manufacture due to their relatively small size:

You will need to paste over with plaster the place on the side of the body in which it is planned to install the spoiler.
When applying the plaster, leave an air hole.
After the gypsum has set, it is necessary to grind the entire surface of the future spoiler and give it perfect smoothness.
It is recommended to blow out the cracks between the pieces of plaster and along the edge of the spoiler with ordinary polyurethane foam.
After the foam hardens, it is necessary to cut off its excess with a knife.
This is then followed by a thorough sanding of the entire spoiler surface.
After the spoiler has been given perfect smoothness, you can start degreasing and painting it.

Video: we make an original body kit with our own hands

Thus, the spoiler can be made from a wide variety of materials - chipboard, galvanized iron, gypsum, foam, fiberglass, etc. It all depends on the experience of the car enthusiast and his skills in working with certain materials and tools.

At the moment, spoilers on cars are considered special chic, as they give the body a more toned and attractive look. However, when self-tuning your car, you need to know when to stop, since installing spoilers on the roof, both bumpers and along the edges can turn the car into an unattractive vehicle, completely devoid of aerodynamics. The operation of such a car will be unsafe, first of all, for the owner himself.

- this is a question, practically, of life and death. "Aggressive" spoiler can add a missing flavor to the exterior of the car or, on the contrary, spoil everything. Therefore, it is important to know what you want and roughly imagine what will happen after installing the spoiler.

Spoiler selection

Most foreign manufacturers install spoilers at the factory. Your kia dealer offers a variety of vehicle options. You can buy cars with factory spoilers, body kits and other improvements.
In stores now there is a huge variety of models of car spoilers. They differ from both design and materials of manufacture. The only thing they are all alike is that their cost is not very small. And not always buying, even the coolest spoiler, you can get the desired effect. Sometimes the Spoiler can simply be a burden to the car and spoil the exterior exterior a lot.
If you are afraid of such an outcome, and the cost plays an important role for you, then you can make a spoiler yourself. All you need is a lot of free time and a little artistic imagination. If it is in your arsenal, then find necessary materials it will be very easy.

Necessary materials:

A sheet of foam plastic 1x1 m, approximately 5 cm thick.It is possible more, but this should be enough (unless, of course, you are going to make a vertical bar instead of a spoiler)

Fiberglass (the amount will need to be calculated independently, based on the size of the spoiler. There will be 6 layers of fiberglass)

Epoxy mole

Reinforced mesh

Piece of sheet tissue

Putty and primer

Plastic bags

And so let’s go. First you need to cut diagonally in the foam, you need a hole for the future spoiler. We cut out according to our plans and fantasies. That is, as you imagine, you cut out the future workpiece.

Manufacturing process

After that, in accordance with the sketch of the future spoiler (maybe like on paper, then it will be even easier, or in the head, but then you need to have a good imagination), cut out a piece of steel and bend it with the letter L, these will be our spoiler struts, so we put with spacers down, inserting them into the bottom of our foam mold, having previously drilled small holes in the steel at a distance of 3 cm from each other, this should help to reduce the total weight of the part. Then we glue our wing over with fiberglass, liberally lubricating each layer with a reinforced film. Glue the layer through 2 layers of fiberglass reinforced mesh, it should give more strength to our spoiler, without significantly increasing the overall weight. By the way, epoxy dries better when high temperatures, up to 1100C.
After complete solidification epoxy resin, we prime the entire surface, it is better not to spare the primer, because the fiberglass absorbs it very actively. After the primer has dried, the surface must be putty. Then, with the help of sandpaper, give the final shape to the wing.
That's all, it remains only to paint and varnish and you can install. Business, a very easy way to do it yourself.

Galvanized iron option

If you have galvanized iron sheet, you can use it to make a rear wing for your car. Such iron is used as a skeleton for future adaptation. If we talk about the ideal shape for a wing, then this is a flat surface with bent ends.
Such a skeleton is pasted over with foam, after which it should be shaped using sandpaper.
When this work is done, the part should be reinforced with carbon fiber. For the most reliable strengthening, we advise you to carry out this procedure in three layers. If you have an industrial hair dryer, it can be used to speed up the drying process.

Tidying up the spoiler surface

To ensure that the surface of the manufactured part is even and

smooth, it must be treated with a primer, after which the filling procedure must be carried out.
Next, you need to clean the surface of the part with sandpaper. It is worth using rough paper in the early stages of stripping, and then slowly switch to a smaller paper size. This way you can achieve a flat and smooth surface, which is now ready for priming and painting. Painting, as well as strengthening, must be carried out in 3 layers. The final step is painting the spoiler.
When you install a new part, you should use a degreaser, which must be used to treat the cleaned installation site. Next, apply epoxy glue to the places where the new part will be attached. When you install your self-made spoiler for your car, you will notice how this procedure has significantly transformed its entire concept, making it more aggressive and sporty.